Question

A bullet comes to rest in a tree in 4 seconds, with an acceleration of -200m/s2. What was the bullets velocity right before it hits the tree

Answer 1

Initially for the bullet, u = 200m/s, v =? a= - 2 m/s2, t = 20s

Now, v = u + at

=> v = 200 + (-2)x20 = 160 m/s

Now, for wall, u = 160 m/s, v = 0, t = 5s

So, a = v-u/t = 0-160/5 = - 32 m/s

Hence, retardation offered by wall is 32 m/s

Answer 2

Step-by-step explanation:

A bullet comes to rest in a tree in 4 seconds, with an acceleration of -200m/s2. What was the bullets velocity right before it hits the tree

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