Kinetic Energy and Momentum Concepts

The video tutorial explains how to calculate the kinetic energy of a body given its mass and momentum. It introduces the problem, presents the formula for kinetic energy as P squared divided by 2m, and walks through the calculation steps. The final result is determined to be 2000 joules or 2 kilojoules.

What is the initial step in solving the problem of calculating kinetic energy?

• Calculate the force applied

• Determine the mass and momentum

• Identify the velocity of the body

• Find the acceleration of the body

Which formula is used to calculate kinetic energy when momentum is given?

• KE = mv

• KE = P^2 / 2m

• KE = 1/2 mv^2

• KE = P / m

In the formula KE = P^2 / 2m, what does 'P' represent?

• Power

• Pressure

• Momentum

• Potential Energy

What is the calculated kinetic energy of the body in the given problem?

• 1000 joules

• 2500 joules

• 1500 joules

• 2000 joules

How can the kinetic energy of 2000 joules be expressed in kilojoules?

• 4 kilojoules

• 3 kilojoules

• 2 kilojoules

• 1 kilojoule