Lesson: Kinetic Energy

How many times larger is the kinetic energy of a bullet of mass 0.005 kg that has a velocity of 500 m/s than the kinetic energy of a drone with a mass of 5 kg and a velocity of 5 m/s?

An object has 75 J of kinetic energy and a mass of 1.5 kg. What is the velocity of the object?

An object that has 9 J of kinetic energy is moving at 3 m/s. What is the mass of the object?

An object’s kinetic energy when it moves at different velocities is shown in the table. What is the object’s mass in grams?

The quantity , the velocity of an object, is how much the object changes its displacement from a given position each second. The quantity is the kinetic energy of an object. Which of the following formulas correctly shows the relationship between , , and the mass of the object?

An object with a mass of 1.25 kg has a velocity of 12 m/s. What is the object’s kinetic energy?

A hummingbird has a mass of 40 g. The hummingbird flies in a straight line between two flowers 18 m apart in a time of 12 s. What is the average kinetic energy of the hummingbird while flying between the flowers?

A motorcycle of mass 250 kg moving at 32 m/s has four times as much kinetic energy as a 640 kg mass car. What is the velocity of the car?

A motorboat at rest on a lake has a mass of 665 kg. The motorboat then accelerates until it has a kinetic energy of 340 480 J. When the motorboat has accelerated, at what rate does it move toward a stationary boat that is directly in front of it?