Question

I give a ball a push on an acclivity. The "start velocity" is on 7m/s. The time it took the ball to get back to me was 10 seconds. The acceleration is a constant. How much is the acceleration?

Answer 1

7÷10

Step-by-step explanation:

initial velocity=7m/s

final velocity=0m/s

Answer 2

-1.4 m/s²

Step-by-step explanation:

The initial velocity is 7 m/s. When the ball rolls back, its velocity is -7 m/s.

Acceleration is change in velocity over change in time.

a = Δv / Δt

a = (-7 m/s − 7 m/s) / 10 s

a = -1.4 m/s²