Work, Energy, and Power
A bicycle has a mass of 10 kg and is moving at a speed of 5 m/s. What is the kinetic energy of the bicycle?
Kinetic energy is a ______ quantity, meaning it has only magnitude and no direction.
A 2 kg object moving at 5 m/s collides with a stationary 1 kg object. After the collision, the 2 kg object moves at 2 m/s in the same direction. What is the kinetic energy of the 1 kg object after the collision?
A ball is thrown with a velocity of 10 m/s by a person standing still. What is the kinetic energy of the ball from the person's frame of reference if the ball has a mass of 0.5 kg?
Two objects, A and B, are moving. Object A has a mass of 2 kg and a velocity of 3 m/s. Object B has a mass of 4 kg. What velocity must object B have in order to possess the same kinetic energy as object A?
A car accelerates from rest to a velocity of 20 m/s over a distance of 100 m. If the car has a mass of 1000 kg, what is its kinetic energy at the end of the 100 m?
Why is kinetic energy always a positive value?
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If the velocity of a moving object is tripled, how does its kinetic energy change?
Two cars are moving in opposite directions. Car A has a mass of 1000 kg and is moving east at 20 m/s, while Car B has a mass of 1500 kg and is moving west at 10 m/s. What is the total kinetic energy of the system?
A car's kinetic energy is measured to be 50,000 J by an observer standing on the side of the road. If another car is moving parallel to the first car at the same speed, what would they measure the kinetic energy of the first car to be?