Straight Line Motion Acceleration in straight line motion

Straight Line Motion Acceleration in straight line motion

A bicycle is travelling in a straight line in the negative xdirection when the cyclist begins to speed up. Is the acceleration positive or negative? A. Positive, because the cyclist is speeding up. B. Positive, because a negative acceleration is always reserved for slowing down. C. Negative, the cyclist is speeding up in the negative x-direction.

A ball is thrown straight up into the air. Ignore air resistance. While the ball is in the air its acceleration A. B. C. D. Increases. Is zero. Remains constant. Decreases on the way up and increases on the way down. E. Changes direction.

Which car has a westward acceleration? A. A car traveling westward at constant speed. B. A car traveling eastward and speeding up. C. A car traveling westward and slowing down. D. A car traveling eastward and slowing down. E. A car starting from rest and moving toward the east.

A leopard starts from rest at t=0 and runs in a straight line with a constant acceleration until t=3 s. The distance covered by the leopard between t=1 s and t=2 s is A. The same as the distance covered during the first second. B. Twice the distance covered during the first second. C. Three times the distance covered during the first second. D. Four times the distance covered during the first second.

In a graph of acceleration vs time, the area under the curve is a measure of A. Displacement B. Velocity C. Speed