Work, Energy, and Power
A 4 kg object is moving at a velocity of 5 m/s. What is its kinetic energy?
An object has a kinetic energy of 36 J and a mass of 8 kg. What is its velocity?
In which of the following scenarios are both kinetic and potential energy present?
A 2 kg mass is dropped from a height of 5 m. Assuming no air resistance, what is its kinetic energy just before impact?
A 1 kg block slides down a ramp with friction and compresses a spring at the bottom. Which of the following is true regarding the total energy?
A 5 kg roller coaster is at the top of a 30 m hill. What is its potential energy?
A pendulum is released from a certain angle. Which of the following is true about its mechanical energy, assuming no friction or air resistance?
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In a system with friction, how does energy transform?
A 2 kg block slides down a ramp with friction. The ramp is 3 m long and the height is 1 m. If the kinetic frictional force is 5 N, how much thermal energy is generated due to friction?
Which of the following systems conserves mechanical energy?