3 years ago

Calculate the change in velocity of a 0.070kg tennis ball hit by Serena with a force of 140 N over 0.020 s

Physics

1 answer:

Brilliant_brown [7]3 years ago

6 0

V=at and a=F/m

140/.070 = 2000m/s^2

2000*.020 = 40m/s

The ball’s velocity increased by 40m/s.

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Here, you can calculate it's potential energy with respect to ground.
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Substitute their values into the expression:
U = 75 × 9.8 × 300
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Hope this helps!

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adoni [48]

<h2>Answer:</h2>

If you triple the charge, the electric potential is 3V.

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