The velocity-time graph has time in seconds and upward positive. What is true at t = 2.0 s?

Use the velocity-time graph for a dropped ball, with downward positive. What acceleration does the slope show?

The graph shows a ball thrown upward with upward positive. At what time is the ball at its highest point?

On this velocity-time graph, upward is positive. What acceleration is represented by the line?

The graph shows a ball thrown downward, with downward positive. What does the graph's slope show?

Near Earth's surface, a ball is in free fall with air resistance negligible. What is its acceleration?

In an evacuated tube, a 2.0 kg ball and a 0.005 kg feather are released from the same height at the same time. What happens?

A ball has just been thrown straight upward and is still rising after it leaves the hand. Which acceleration does it have?

At the instant a tossed ball reaches its highest point, what are its velocity and acceleration?

A student takes upward as the positive direction. What is the acceleration of a freely falling object near Earth?

Which condition describes ideal free fall?

A 0.20 kg ball and a 2.0 kg ball are dropped from the same height with air resistance negligible. Which statement compares their accelerations?

A rock is dropped from rest and falls for 3.0 s. Take $g=9.8m/s^2$, downward positive, and ignore air resistance. What is its velocity?

A stone is released from rest and falls for 1.5 s. Take $g=9.8m/s^2$, downward positive, and ignore air resistance. How far does it fall?

A ball is dropped from rest and falls 78.4 m. Take $g=9.8m/s^2$, downward positive, and ignore air resistance. How long does it fall?

A wrench is dropped from rest for 2.0 s. Take $g=9.8m/s^2$, upward positive, and ignore air resistance. What is its displacement?

A stone is released from rest and falls 44.1 m. Take $g=9.8m/s^2$, downward positive, and ignore air resistance. What is its speed then?

A ball is dropped from rest and falls for 0.80 s. Take $g=9.8m/s^2$, downward positive, and ignore air resistance. What distance does it fall?

A dropped object reaches a downward velocity of 24.5 m/s from rest. Take $g=9.8m/s^2$ and downward positive. How long has it fallen?

A ball is thrown straight up at 24.5 m/s. Take $g=9.8m/s^2$, upward positive, and ignore air resistance. How long until it reaches the top?

A ball is thrown upward from ground level at 14.7 m/s and returns to that height. Take $g=9.8m/s^2$, upward positive. What is the total flight time?

A ball is thrown straight up at 9.8 m/s. Take $g=9.8m/s^2$, upward positive, and ignore air resistance. What maximum height does it reach?

A ball is thrown straight up at 21.0 m/s. Take $g=9.8m/s^2$, upward positive, and ignore air resistance. What is its maximum height?

A ball is thrown upward at 29.4 m/s and lands back at the launch height. Take $g=9.8m/s^2$, upward positive. What is its total flight time?

A ball is thrown straight up at 15.0 m/s. Take $g=9.8m/s^2$, upward positive, and ignore air resistance. What greatest height does it reach?