Power

How much power is required to raise a 200-kg crate a vertical distance of 2 m in a time of 4 s?

Which requires more work – a person walking up stairs or a person running up stairs?

Which requires more power – a person walking up stairs or a person running up stairs?

A major league pitcher can throw a baseball with a kinetic energy of 150 J. How much work must the pitcher do to the ball to give it that much KE?

You are traveling along a freeway at 65 mi/h; your car has kinetic energy. You suddenly skid to a stop because of congested traffic. What happened to the kinetic energy your car just had?

Four students run up the stairs in the time shown. Which student has the largest power output?

If you have the same work as someone, but in less time

Person A and Person B are both using the same amount of work to lift something. Person A takes half as much time to do it. Who has greater power.