Intro to Impulse Video Lessons

Concept

# Problem: A boxer punches a sheet of paper in midair from rest to a speed of 40 m/s in 0.05 s. If the mass of the paper is 0.01 kg, the force of the punch on the paper is______A) 0.8 N.B) 0.08 N.C) 8.0 N.D) 80 N.

###### FREE Expert Solution

Impulse:

$\overline{){\mathbf{J}}{\mathbf{=}}{\mathbf{F}}{\mathbf{∆}}{\mathbf{t}}{\mathbf{=}}{\mathbf{∆}}{\mathbf{p}}{\mathbf{=}}{\mathbf{m}}{\mathbf{∆}}{\mathbf{v}}}$

In this problem, we have mass, time, initial and final speeds. Thus, we know that that the problem involves momentum and impulse.

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###### Problem Details

A boxer punches a sheet of paper in midair from rest to a speed of 40 m/s in 0.05 s. If the mass of the paper is 0.01 kg, the force of the punch on the paper is

______

A) 0.8 N.

B) 0.08 N.

C) 8.0 N.

D) 80 N.