The energy stored in an object due to its position or height is known as _________________.
gravitational potential energy
A boy runs up the stairs and does 300 J of work in 10 seconds. What is his power output?
30 W
True or False. Power is the rate at which work is done.
True
Which of the following is true about an object in circular motion?A. Its direction is constant B. Its speed is always constant C. Its velocity is always changing D. There is no net force acting on it
C. Its velocity is always changing
True or False. An example of work is when a boy lifts a bag from the floor to the table.
True
The energy possessed by an object due to its motion is called ___
kinetic energy
In circular motion, the net force always acts away from the center.
False
Write the formula for calculating Power.
P = W/t or P = Fd/t
A student pushes a 5-kg box with a force of 20 N across a distance of 3 meters. How much work is done?
60 J
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