Year 10 Applied Physics Force and motion revision

Year 10 Applied Physics Force and motion revision

Q 1. If a person makes a return journey across a room, what is their displacement? A. zero B. twice the length of the room C. half the length of the room D. the length of the room

Q 2. Under certain conditions a car covers 350 km in 4 hours. The average speed of the car is calculated from … A. B. C. D.

Q 3. A radar gun is used to measure … A. average speed. B. excessive speed. C. instantaneous speed. D. velocity.

Q 4. This diagram shows the motion of a walker. What is the displacement of the walker? A. 4 km S B. 4 km N C. 7 km S D. 20 km

Q 5. This graph shows two different speeds for a jogger. What is the average speed? A. 1 m/s B. 1. 25 m/s C. 2 m/s D. 24 m/s Standard: Give both qualitative and quantitative explanations of the relationships between force, mass and movement / Apply

Q 6. A ticker-timer produces 50 dots per second. A strip of paper moving through a ticker-timer showed a line of dots that were closely spaced, then further apart, then closely spaced again. As the strip of paper moved through the timer it … A. accelerated, then decelerated. B. decelerated, then accelerated. C. accelerated, then decelerated then accelerated. D. decelerated, then accelerated then decelerated. Standard: Give both qualitative and quantitative explanations of the relationships between force, mass and movement / Describe

Q 7. A ticker-timer produces 50 dots per second. A strip of paper moving through the timer shows a regular array of dots spaced 2 cm apart. What is the speed of the strip of paper? A. 2 x 50 cm per second B. 2 + 50 cm per second C. 50 + 2 cm per second D. 50 / 2 cm per second Standard: Give both qualitative and quantitative explanations of the relationships between force, mass and movement / Calculate

Q 8. This diagram shows three different ticker tapes. The speeds in increasing order are … A. b, c and a. B. a, c and b. C. b, a and c. D. a, c and b.

Q 9. A ticker-tape produces 50 dots per second. This diagram shows three different ticker tapes. The distance between the two vertical lines in tape C is 5. 3 cm. The speed measured for tape C is closest to … A. 16 cm/s. B. 24 cm/s. C. 32 cm/s. D. 40 cm/s.

Q 10. Consider this distance-time graph. What is the speed of the object in m/s? A. 0. 5 B. 1 C. 2 D. 4

Q 11. This distance-time graph is drawn for a moving object. Imagine a second object starting from the same point and moving at 3 m/s. The line for this second object passes through … A. time = 1 s, distance = 1 m. B. time = 2 s, distance = 3 m. C. time = 3 s, distance = 9 m. D. time = 4 s, distance = 10 m.

Q 12. Which of the following is true for the object on this graph? A. It accelerated for 5 seconds. B. It started from rest. C. It was stationary for 2 seconds. D. It was travelling at two different speeds .

Q 13. At the time of 1. 5 seconds, the object on this speedtime graph was travelling at … A. 1 m/s. B. 2 m/s. C. 3 m/s. D. 4 m/s.

Q 14. Between the third and fifth seconds, the object on this graph was … A. stationary and didn’t cover any distance. B. travelling at constant speed and covered 8 metres. C. travelling at constant speed and covered 14 metres. D. accelerating and covered 14 metres.

Q 15. This graph shows the speed of two particles. For particle b to travel the same distance as particle a, it would need to continue without change for a total of … A. 6 seconds. B. 9 seconds. C. 12 seconds. D. 15 seconds.

Q 16. This is a speed-time graph. What is the total time of acceleration? A. 2 s B. 5 s C. 7 s D. 10 s

Q 17. What is the total distance travelled by the object on this speed-time graph? A. 20 m B. 30 m C. 40 m D. 50 m

Q 18. Imagine a sudden hazard encountered by a driver on the road. The reaction distance is the distance the vehicle travels before a driver finally stops. Assume that a driver takes 1. 2 seconds to react and stop their vehicle. At 60 km/h this reaction distance is … A. 10 m. B. 15 m. C. 20 m. D. 25 m.

Q 19. This graph shows the reaction distance and braking distance for an average driver to stop a car. If a car is travelling at 100 km/h, how much further is the braking distance than the reaction distance? A. 20 m B. 30 m C. 40 m D. 50 m

Q 20. This graph shows the reaction distance and braking distance for an average driver to stop a car. Around schools the speed restriction is 40 km/h. At 40 km/h the stopping distance is half that for a car travelling at … A. 50 km/h. B. 60 km/h. C. 70 km/h. D. 80 km/h.

Q 21. A car slows suddenly changing speed from 90 km/h to 60 km/h in 3 seconds. Its deceleration is … A. 90 km/h/s B. 50 km/h/s C. 10 km/h/s D. -10 km/h/s

Q 22. Calculate the final speed of the skier if he accelerated downhill at 4 m/s 2 for 5 seconds from an initial speed of 10 m/s. A. 14 m/s B. 20 m/s C. 30 m/s D. 200 m/s

Q 23. A rocket has an initial speed of 500 m/s. After accelerating at 50 m/s 2 for 8 seconds it reaches its final speed, which is … A. 500 + (50 x 8) m/s. B. 50 + (500 x 8) m/s. C. 8 + (50 x 500) m/s. D. 500 x 50 x 8 m/s.

Q 24. The path that shows no acceleration on this graph is labelled … A. B. C. D. A B C D

Q 25. This diagram shows oil stains from three different cars on a road. If the cars are all leaking oil at constant rates, which of the following statements is true? A. One of the cars was travelling at constant speed. B. One car accelerated then decelerated. C. Car c was travelling faster than the other two cars. D. If we knew the speed of car a, we could calculate the speed for car b.

Q 26. A force is not able to cause … A. an increase in the speed of an object. B. a change in the direction that an object is moving. C. the deformation of an object. D. an object to maintain constant motion.

Q 27. ‘A body at rest or moving uniformly in a straight line will continue to do so unless compelled to change by some external force. ’ The above is a statement of Newton’s … A. First Law. B. Second Law. C. Third Law. D. Fourth Law.

Q 28. Which of the following forces is a contact force? A. electrostatic B. magnetic C. buoyancy D. gravitational

Q 29. It takes a ship many kilometres to stop at sea, yet a truck on the road can be stopped in a few tens of metres. What is a reason for this? A. There is very little friction between a ship and water. B. Ships are much heavier than trucks. C. Ships don’t have brakes. D. The wind always blows a ship forward.

Q 30. Imagine that you are standing on a bus when it suddenly turns to the left and you are flung to the right. This motion occurs because … A. inertia pushes you in the opposite direction. B. the swerving bus throws you forward. C. you didn’t anticipate what the bus was going to do. D. your body continued moving in the direction that the bus was travelling.

Q 31. This diagram shows a girl swinging a bucket of water in a counter-clockwise motion. When the bucket is just above her head she lets it go. The bucket will … A. fly upwards. B. fall on her head. C. move horizontally to the left. D. move horizontally to the right.

Q 32. This diagram shows the modelling of a collision. A trolley rumbles down the slope hitting a stationary trolley at the bottom of the ramp. What happens to both people on the trolleys? A. The rear person moves forward and the front person moves backward. B. The rear person moves forward and the front person moves forward. C. The rear person moves backward and the front person moves forward. D. The rear person moves backward and the front person moves backward.

Q 33. If the driver of a car was not wearing a seat belt when they were hit from behind … A. the final point of stopping force would be provided by the head hitting the steering wheel. B. their body would decelerate with car after the impact. C. the final stopping force would be spread across the body. D. all of the above. Standard: Give both qualitative and quantitative explanations of the relationships between force, mass and movement / Apply

Q 34. Three frames of a car collision are shown. If the seat had a headrest … A. The person’s head would hit the headrest and be thrown forward with a greater force. B. The person’s head would be stopped from moving so far backward and then forward with less movement. C. The person’s head would still move back then forward with the same inertia. D. The person’s head would stay in the same position shown in Give both qualitative and quantitative explanations of the relationships between force, mass and movement / Apply the. Standard: first frame.

Q 35. The acceleration of an object depends on the … A. speed and force applied. B. weight and distance moved. C. mass and force applied. D. velocity and direction of travel.

Q 36. This diagram shows people pushing vehicles. It exemplifies Newton’s … A. First Law. B. Second Law. C. Third Law. D. Fourth Law.

Q 37. Three identical cars are stopped at traffic lights. Compared to the car not pulling any load, the car with the greatest load has a maximum acceleration of … A. one-third. B. one-half. C. double. D. triple.

Q 38. A 70 kg student is accelerated at 4 m/s 2. What is the force applied? A. 70 x 4 N B. 70 + 4 N C. 4 + 70 N D. 70 x 42 N

Q 39. Starting from a stationary position, what speed does this block of wood achieve after 12 seconds? A. 5 m/s B. 60 m/s C. 96 m/s D. 600 m/s

Q 40. A force of 4000 N accelerates an 800 kg car from a stationary position. What is the car’s speed after 10 seconds? A. 5 m/s B. 25 m/s C. 50 m/s D. 75 m/s

Q 41. Jim measured the acceleration of a trolley using the set-up shown below. The acceleration of trolley Q was measured at 0. 6 m/s 2. The acceleration rate of trolleys P and R was … A. trolley P accelerated at 0. 3 m/s 2 while trolley R accelerated at 0. 9 m/s 2. B. trolley P accelerated at 0. 9 m/s 2 while trolley R accelerated at 0. 3 m/s 2. C. trolley P accelerated at 0. 3 m/s 2 while trolley R accelerated at 1. 2 m/s 2. D. both had an acceleration of 0. 6 m/s 2.

Q 42. This cartoon is a demonstration of which one of Newton’s Laws? A. The First Law B. The Second Law C. The Third Law D. The Fourth Law Standard: Give both qualitative and quantitative explanations of the relationships between force, mass and movement / Define

Q 43. Which of the following is not an example of Newton’s Third Law? A. B. C. D. the recoil of a rifle a rocket lifting off the launch pad the workings of a jet engine a skater slowing down as she glides across the ice Standard: Give both qualitative and quantitative explanations of the relationships between force, mass and movement / Apply

Q 44. If a spacecraft flying through space has its engines turned off … A. B. C. D. the spaceship will continue on its course at a constant speed. the spaceship will gradually slow down and stop. the spaceship will quickly come to a halt. the spaceship will continue accelerating at the same rate as before the engines were turned off. Standard: Give both qualitative and quantitative explanations of the relationships between force, mass and movement / Apply

Q 45. This diagram shows a demonstration of Newton’s Third Law. The whirly rocket will spin faster if … A. B. C. D. the flexible straw is made longer. the flexible straw is made heavier. the balloon contains more gas comes out of the straw’s opening.

Q 46. Rockets use action-reaction to provide thrust force needed for a launch. A rocket begins to hover when … A. B. C. D. thrust force = weight of rocket thrust force > weight of rocket thrust force < weight of rocket thrust force = 0

Q 47. On a planet, the rate of a falling object depends on factors such as: P – the mass of the planet Q – the mass of the object falling R – the distance the object is from the centre of the planet. Which of these factors determines gravity? A. B. C. D. P and Q only P and R only Q and R only P, Q and R

Q 48. An astronaut has a mass of 100 Kg on Earth. If he weighs 350 N on another planet, the acceleration due to gravity on this planet would be … A. 35000 m/s 2 B. 350 m/s 2 C. 35 m/s 2 D. 3. 5 m/s 2

Q 49. An experiment was conducted to see whether water will exit through a hole in a falling cup. Which of the following was determined from the experiment? A. Water exits slowest in a stationary cup. B. Water does not exit the hole in a falling cup. C. Water is sucked back into the falling cup. D. Air is drawn into the cup.

50. A feeling of weightlessness can occur on a carnival ride that suddenly falls because … A. Weight becomes zero during free fall. B. Gravity becomes zero during free fall. C. The seat falls faster than you do so you not feel your weight. D. The seat cannot push back to give you normal feelings of weight.