Question

Select the correct answer. In a video game, a ball moving at 0.6 meter/second collides with a wall. After the collision, the velocity of the ball changed to -0.4 meter/second. The collision takes 0.2 seconds to occur. What's the acceleration of the ball during the collision? Use a equals fraction numerator v minus u over denominator t end fraction. Group of answer choices 5.0 m/s2 -5.0 m/s2 1.0 m/s2 0.24 m/s2 -1.0 m/s2

Answer 1

a = - 5 m/s²

Step-by-step explanation:

The acceleration of the ball can be found by using the general formula of acceleration as follows:

`a = (\Delta V)/(\Delta t)`

where,

a = acceleration of ball = ?

ΔV = change in velocity = Final Velocity - Initial Velocity

ΔV = - 0.4 m/s - 0.6 m/s = -1 m/s

Δt = time of contact with the wall = 0.2 s

Therefore, using the values in equation, we get:

`a = (-1\ m/s)/(0.2\ s)\\\\a = -5\ m/s^2`

Therefore, the correct option is:

a = - 5 m/s²