Question

A bullet of mass 125 g is placed in a rifle. The trigger of the rifle is pulled, and
the recoiling string hits the bullet and applies a force of 45 N to it. The bullet
flies away from the rifle. What rate of acceleration does the bullet have in the
direction of the push from the string?

Answer 1

Answer:

360 ms⁻²

Explanation:

from newton's second law,

force = mass x acceleration

f = ma

f = 45N ; m = 125g

mass should be in kg.

therefore, m = 0.125 kg [ divide m by 1000]

by substituting,

45N = 0.125kg x a

a = 45N / 0.125kg

a = 360 ms⁻²

acceleration is 360 ms⁻²

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Answer 2

A bullet of mass 125 g is placed in a rifle. The trigger of the rifle is pulled, and

the recoiling string hits the bullet and applies a force of 45 N to it. The bullet

flies away from the rifle. What rate of acceleration does the bullet have in the

direction of the push from the string?