Intro to Impulse Video Lessons

Concept

# Problem: To warm up for a match, a tennis player hits the 57.0-g ball vertically with her racket. If the ball is stationary just before it is hit and goes 5.50 m high, what impulse did she impart to it?

###### FREE Expert Solution

Impulse:

$\overline{){\mathbf{I}}{\mathbf{=}}{\mathbf{F}}{\mathbf{·}}{\mathbf{t}}{\mathbf{=}}{\mathbf{∆}}{\mathbf{p}}}$

Δp = mΔv = m(vf - v0) = mv0

Uniform accelerated motion (UAM) equations, a.k.a. "kinematics equations":

We'll use kinematics to determine the initial velocity.

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###### Problem Details

To warm up for a match, a tennis player hits the 57.0-g ball vertically with her racket. If the ball is stationary just before it is hit and goes 5.50 m high, what impulse did she impart to it?