Question

A ball is thrown straight upward and falls back to Earth. Suppose a y-coordinate axis points upward, and the release point is the origin. Instantaneously at the top its flight, which of these quantities are zero

a. Displacment
b. Speed
c. Velocity
d. Accerlation

Answer 1

Explanation:

A ball is thrown straight upward and falls back to Earth. It means that it is coming to the initial position. Displacement is given by the difference of final position and initial position. The displacement of the ball will be 0. As a result velocity will be 0.

Acceleration is equal to the rate of change of velocity. So, its acceleration is also equal to 0.

Hence, displacement, velocity and acceleration are zero.