Brynn B.

asked • 04/24/15

What force is necessary to increase the velocity of a 50kg ball from 5m/s to 15m/s

Answer needs to be in newtons

Stephanie M.

tutor
I think you'll need to have a time value before you can solve this. I could exert a large force over a small period of time to increase the ball's velocity or I could exert a small force over a long period of time to do the same thing.
 
It could be that you're looking for energy instead of force, but then the answer wouldn't be in Newtons.
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04/24/15

1 Expert Answer

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Michael J. answered • 04/24/15

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Force is mass times acceleration.
 
F = ma
 
where:
F = force
m = mass
v = velocity
 
Given:
m = 50 kg
v1 = 5 m/s
v2 = 15 m/s
 
First we need to find acceleration.
 
Acceleration is change in velocity over time.  You need to have the time in order to get your acceleration.  Once you have your acceleration, multiply it by the mass.
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