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Which of the following is the rate at which work is done?
J Joule
power
89J
560W
when it is at its highest point above the ground
3.02x10^4J
kinetic energy decreases
80J
If the mechanical energy in a system is 100J and the potential energy is 20J, how much kinetic energy is in the system?
J Joule
power
89J
560W
when it is at its highest point above the ground
3.02x10^4J
kinetic energy decreases
80J
If friction is the only force acting on an object during a given physical process, which of the following assumptions can be made in regard to the object’s kinetic energy?
J Joule
power
89J
560W
when it is at its highest point above the ground
3.02x10^4J
kinetic energy decreases
80J
What is the average power supplied by a person with a weight of 590 N who is running up a flight of stairs a vertical distance of 4.0 m in 4.2 s?
J Joule
power
89J
560W
when it is at its highest point above the ground
3.02x10^4J
kinetic energy decreases
80J
What is the potential energy of a 2.6 kg mass 3.5 m above the ground?
J Joule
power
89J
560W
when it is at its highest point above the ground
3.02x10^4J
kinetic energy decreases
80J
An apple would have the highest gravitational potential energy when it was
J Joule
power
89J
560W
when it is at its highest point above the ground
3.02x10^4J
kinetic energy decreases
80J
The unit for work is
J Joule
power
89J
560W
when it is at its highest point above the ground
3.02x10^4J
kinetic energy decreases
80J
A 70.0kg man bungee jumps off a bridge, and the bungee cord stretches 29.0m. If the spring constant of the bungee cord is 71.8N/m, what is the elastic potential energy of the jumper?
J Joule
power
89J
560W
when it is at its highest point above the ground
3.02x10^4J
kinetic energy decreases
80J
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