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.
-1.0 m/s2
b.
1.0 m/s2
c.
-5.0 m/s2
d.
5.0 m/s2
e.
0.24 m/s2

answer:

d. 5.0 m/s2

ok so the velocity of the ball at first was 0.6 then when it collided it went to -0.4, now, what we have to do is use the formula a = δv ÷ δt

first we subtract -0.4   from 0.6

0.6 - (-0.4) = 1 one is the change in velocity

so, 1/0.2 = 5

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