Intro to Impulse Video Lessons

Concept

# Problem: The fastest pitched baseball was clocked at 46 m/s. Assume that the pitcher exerted his force (assumed to be horizontal and constant) over a distance of 1.0 m, and a baseball has a mass of 145 g. (a) What force did the pitcher exert on the ball during this record-setting pitch? (b) Estimate the force in Part (a) as a fraction of the pitcher

###### FREE Expert Solution

Impulse:

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

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

We have:

• v0 = 0 m/s
• vf = 46 m/s
• Δx = 1.0 m
• t = ?
• a = ?

We have two options for determining F:

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###### Problem Details

The fastest pitched baseball was clocked at 46 m/s. Assume that the pitcher exerted his force (assumed to be horizontal and constant) over a distance of 1.0 m, and a baseball has a mass of 145 g.

(a) What force did the pitcher exert on the ball during this record-setting pitch?

(b) Estimate the force in Part (a) as a fraction of the pitcher