Lesson: Kinetic EnergyPhysics
In this lesson, we will learn how to calculate the kinetic energy of an object moving relative to an observer given its mass and velocity.
Sample Question Videos
Worksheet: 16 Questions • 2 Videos
A bullet of weight 8.0 g has a speed of 800 m/s.
What is its kinetic energy?
What is its kinetic energy if the speed is halved?
How fast must an elephant with a mass of 3,000 kg move to have the same kinetic energy as a sprinter with a mass of 65.0 kg running at 10.0 m/s?
You are launching a 2.0 kg potato out of a potato cannon. The cannon is 1.5 m long and is aimed 30 degrees above the horizontal. It exerts a 50 N force on the potato. What is the kinetic energy of the potato as it leaves the muzzle of the potato cannon?