# 3 rd Quarter CRT Review 1 8 0

- Slides: 67

3 rd Quarter CRT Review - 1 8. 0 8. 1 9. 0 9. 1 10. 0 ? ? 5 5 5 10 10 10 15 15 15 20 20 20 25 25 25

ASCOS #8. 0 – 5 points Question According to Newton’s 2 nd law, if there is an increase in force, what will happen to the acceleration of the object?

ASCOS #8. 0– 10 points Question According to Newton’s first law of motion, what will a moving object that is not acted on by an unbalanced force do?

ASCOS #8. 0– 15 points Question According to Newton’s Laws, when the brakes are suddenly applied to a moving vehicle, what causes a person to continue to move forward in his seat?

ASCOS #8. 0– 20 points Question According to Newton’s third law of motion, when a force is exerted on an object what does a second force produce?

ASCOS #8. 0– 25 points Question If an astronaut uses a jet of nitrogen to maneuver in space, what law is illustrated as the nitrogen is expelled?

ASCOS #8. 1– 5 points Question A student kicks a 0. 7 kg ball. She then kicks a 70 kg rock with the same force. What can be said about the acceleration of the ball as compared to the rock?

ASCOS #8. 1– 10 points Question All objects accelerate toward the Earth at a rate of 9. 8 m/s/s. What is the effect on velocity for every second that an object falls downward?

ASCOS #8. 1– 15 points Question Due to projectile motion, where should Mr. Smith aim when shooting at a target?

ASCOS #8. 1– 20 points Question Given the formula (F=ma), how much force is needed to accelerate a 62 kg rider and her 300 kg motor scooter at 6 m/s/s.

ASCOS #8. 1– 25 points Question Given the formula, (acceleration = final velocity – starting velocity divided by time), what is a plane’s acceleration from Mobile to Saraland if the plane passes over Mobile with a velocity of 8, 000 m/s north and then passes over Saraland at a velocity of 10, 000 m/s north, 40 s later?

ASCOS #9. 0– 5 points Question A construction worker is given four hammers of different lengths. Which hammer would have the greatest mechanical advantage?

ASCOS #9. 0– 10 points Question How would you describe the input force and distance of a screw?

ASCOS #9. 0– 15 points Question A student is given a 10 kg rock, four boards, and a fulcrum to make a lever. Which board will have the greatest mechanical advantage if the fulcrum is placed in the same place relative to the load?

ASCOS #9. 0– 20 points Question A student wants to lift a 20 kg box. She has four pulleys and a 18 m rope. Which arrangement would have the greatest mechanical advantage?

ASCOS #9. 0– 25 points Question To open a bottle, Mary applied a force of 90 N to the bottle opener. The bottle opener applies a force of 225 N to the bottle cap. What is the mechanical advantage of the bottle opener?

ASCOS #9. 1– 5 points Question A 546 g fish displaces 420 cm 3 of water. What is the density of the fish? (D=m/v)

ASCOS #9. 1– 10 points Question How do gases and air flow?

ASCOS #9. 1– 15 points Question Air is made up of gases, but it can be called a fluid. Why is an airplane able to fly within this fluid?

ASCOS #9. 1– 20 points Question An ice cube is dropped into a glass of water that is filled to the top. The ice cube causes some of the water to overflow. What is true of the weight of the displaced water?

ASCOS #9. 1– 25 points Question In what direction do gases exert pressure?

ASCOS #10. 0– 5 points Question A ball falls from a height of 6 meters in the absence of air resistance. When does the ball have the greatest kinetic energy and the least potential energy?

ASCOS #10. 0– 10 points Question A roller coaster travels up and down a large hill and then a small hill. At what point on the hills does the roller coaster have the greatest kinetic energy?

ASCOS #10. 0– 15 points Question A student is observing traffic and sees four vehicles: a large truck traveling 60 m/s, a large truck traveling 30 m/s, a small car traveling 40 m/s, and a small car traveling 25 m/s. Which vehicle has the MOST kinetic energy?

ASCOS #10. 0– 20 points Question A vehicle is traveling at 25 Km per hour. It increases its speed to 60 km per hour. What happens to its kinetic and potential energy?

ASCOS #10. 0– 25 points Question By increasing the speed of an object what happens to its potential energy?

ASCOS #8. 0– 5 points Question What does Newton’s second law of motion state about an object’s acceleration?

ASCOS #8. 1– 10 points Question Given the formula, (average speed = total distance divided by total time), what is the bird’s average speed if it flies 250 m for 25 s? (s=d/t)

ASCOS #9. 0– 15 points Question What is the term for a slanted surface used to raise an object?

ASCOS #9. 1– 20 points Question The reason you blow round bubbles and not square ones is explained by what principle?

ASCOS #10. 0– 25 points Question Two objects have the same mass. One object is traveling vertically 25 km/s. The other object is on the floor and is traveling horizontally at a speed of 25 km/s. Which one has the greatest kinetic energy and least potential energy?

ASCOS #8. 0 Topic Identify Newton’s Three Laws of Motion.

ASCOS #8. 1 Topic Identify and calculate the elements of motion.

ASCOS #9. 0 Topic Describe how mechanical advantages of simple machines reduce the amount of force needed for work.

ASCOS #9. 1 Topic Describe the effect of force on pressure in fluids.

ASCOS #10. 0 Topic Differentiate between kinetic and potential energy.

ASCOS #? ? Topic Hodge Podge – a mixture of questions from all objectives.

ASCOS # 8. 0 Answer The acceleration will increase.

ASCOS # 8. 0 Answer It will remain in motion.

ASCOS # 8. 0 Answer inertia

ASCOS # 8. 0 Answer A force equal in size and opposite in direction.

ASCOS # 8. 0 Answer Newton’s third law

ASCOS # 8. 1 Answer The ball will have a greater acceleration than the rock.

ASCOS # 8. 1 Answer It increases by 9. 8 m/s until it reaches terminal velocity.

ASCOS # 8. 1 Answer Above the bull’s eye.

ASCOS # 8. 1 Answer 2172 N [F=ma = (62 kg + 300 kg)(6 m/s/s) = (362 kg)(6 m/s/s) = 2172 N]

ASCOS # 8. 1 Answer 50 m/s/s north [Vf – Vs /t = 10, 000 m/s – 8, 000 m/s ÷ 40 s = 2, 000 m/s ÷ 40 s = 50 m/s/s. ]

ASCOS # 9. 0 Answer The longest hammer.

ASCOS # 9. 0 Answer Small input force over a long distance.

ASCOS # 9. 0 Answer The longest board

ASCOS # 9. 0 Answer The rope with 4 pulleys

ASCOS # 9. 0 Answer 2. 5 [Mechanical Advantage = Output force/Input force = 225 N/ 90 N = 2. 5]

ASCOS # 9. 1 Answer 1. 3 g/cm 3 [D=m/v = 546 g/420 cm 3 = 1. 3 g/cm 3]

ASCOS # 9. 1 Answer Always from areas of high pressure to low pressure

ASCOS # 9. 1 Answer Because of Bernoulli’s principle (difference in speed of air) and decrease of pressure which provides lift.

ASCOS # 9. 1 Answer It is the same as the weight of the ice cube

ASCOS # 9. 1 Answer Evenly in all directions.

ASCOS # 10. 0 Answer Just before it hits the ground.

ASCOS # 10. 0 Answer The bottom of the biggest hill.

ASCOS # 10. 0 Answer The large truck traveling at 60 m/s.

ASCOS # 10. 0 Answer Kinetic energy is increased and potential energy is not affected.

ASCOS # 10. 0 Answer It does not affect potential energy.

ASCOS # 8. 0 Answer It increases as its mass decreases and as the force acting on it increases.

ASCOS # 8. 1 Answer 10 m/s [s=d/t = 250 m/25 s = 10 m/s]

ASCOS # 9. 0 Answer Inclined plane

ASCOS # 9. 1 Answer Pascal’s principle

ASCOS # 10. 0 Answer They have the same kinetic energy but the one traveling horizontally on the floor has the least potential energy.

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