Work, Energy, and Power
An object has a kinetic energy of 36 J and a mass of 8 kg. What is its velocity?
In a system with friction, how does energy transform?
A 5 kg roller coaster is at the top of a 30 m hill. What is its potential energy?
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?
A box is pushed across a floor with friction. What is the sign of work done by friction?
A 4 kg object is moving at a velocity of 5 m/s. What is its kinetic 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?
How are we doing?
Give us your feedback and let us know how we can improve
Which of the following systems conserves mechanical energy?
A 1000 kg satellite orbits Earth in a circular orbit at a constant speed. Which of the following is true about its energy?
In which of the following scenarios are both kinetic and potential energy present?