A weightlifter liftsa 1,250-N barbell 2 m in 3 s. how much power was used to lift the barbell?

Based on Newton's First Law, what would you expect to happen to a block that is pushed across ice and begins moving (You may assume there is no friction for this scenario? What would be necessary to cause the block to stop moving?

A kite suspended in the sky is flowing back and forth. Which type of friction is being described?

What object or class of objects makes up most of the solar systemâs mass?

A ball is thrown straight upward. How does the sign of the work done by gravity while the ball is traveling upward compare with the sign of the work done by gravity while the ball is traveling downward? A.

A tree is 24 feet 8 inches tall. What is its height in meters?

A refrigerator is a system. The energy input into the refrigerator system (in the form of electricity) is the same as the amount of energy output from the system. Which of the following best describes the energy output of the system?

A 1,120 kg car is travelling with a speed of 40 m/s. Find its energy.

3. Calculate the amount of current through a 45-watt light bulb that is connected to a 120-volt circuit in your home.

Are oranges called oranges because oranges are orange, or is orange called orange because oranges are orange?

An object at rest has no net force acting on it. a. True b. False