A 0.83 kg ball drops vertically onto a floor, hitting with a speed of 20 m/s. It rebounds with an initial speed of 15 m/s. (a) What impulse acts on the ball during the contact? (b) If the ball is in contact with the floor for 0.0103 s, what is the magnitude of the average force on the floor from the ball?

Question
Asked Oct 15, 2019

A 0.83 kg ball drops vertically onto a floor, hitting with a speed of 20 m/s. It rebounds with an initial speed of 15 m/s. (a) What impulse acts on the ball during the contact? (b) If the ball is in contact with the floor for 0.0103 s, what is the magnitude of the average force on the floor from the ball?

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Step 1

(a)

 

Write the expression for the impulse on the...

J = m(Av)
-m(v,-v)
-(0.83 kg)((15 m/s)-(-20 m/s))
29.05 kg m/s
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J = m(Av) -m(v,-v) -(0.83 kg)((15 m/s)-(-20 m/s)) 29.05 kg m/s

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