Question

A 5.00 kilogram mass is traveling at 100. meters per second. Determine the speed of the mass after an impulse with a magnitude of 30.0 newton • seconds is applied.

Answer 1

The answer to this question is 106 m/s

Answer 2

m = mass = 5 kg

$v_{i}$ = initial velocity = 100 m/s

$v_{f}$ = final velocity = ?

I = impulse = 30 Ns

Using the impulse-change in momentum equation

I = m($v_{f}$ - $v_{i}$)

30 = 5 ($v_{f}$ - 100)

$v_{f}$ = 106 m/s