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Find the change in potential energy of the object

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Reference no: EM13957703

1. The speed of a 4.0kg object is given by (2t) m/s, where t is in seconds. At what rate is the resultant force on this object doing work at t = 1 second?

Answers:
a) 48 W
b) 40 W
c) 56 W
d) 16 W

2. A 10kg object is initially at the top of a rise, at point A. It then moves down to point B. Choose point B to be your zero level for gravitational potential energy. Find the change in potential energy of the object if point B is 10m lower than point A?

Answers:
a) -980
b) -10
c) -100
d) -98

Reference no: EM13957703

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