Suppose the gravitational acceleration on a certain planet is only 4.0 m/s2. a space explorer standing on this planet throws a ball straight upward with an initial velocity of 24 m/s. assume that upward direction is positive. what is the velocity of the ball 3 seconds after it is thrown?

12 m/s

Explanation:

a = 4 m/s^2

u = 24 m/s

t = 3 second

Let the velocity of the ball after 3 second is v.

Use first equation of motion

v = u + a t

v = 24 - 4 x 3

v = 24 - 12 = 12 m/s

t2 equal the displacement of the particle over the same time period if t2> t/2? hint: consider a sine wave starting at t1=0, then consider a closing wave starting at t1=0, for your explanatio