1. An object weighs 25 kg is moving at 5 m/s2at 16 m. Calculate the work.
2. A car has 350 N is moving at 25 m. What is the work of the car?
3.Calculate the power of a 5 kg ball that is moving at 8.3 m/s2at 10 m over 15 seconds.
4.A girl is throwing a ball with 15.6 J over 3 min. What is her power?
5.A 6.5 kg ball fell from a height of 13 m with 3.5 m/s2over 3 seconds. What is the work of the ball? What is the power?
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1.Given:force-25kg
acceleration -5m/s2
mass-16m
KE=1/2mv2
=1/2(25kg)(5m/s2)
=1/2(25kg)(50m/s)2
=1,250 J