Physics ยท Science General

Collisions, Momentum and Kinetic Energy

331 Questions

Collisions, momentum, and kinetic energy questions analyze the principles of elastic and inelastic impacts. They require calculating mass, velocity, and conserved energy during physical interactions. These foundational physics topics are essential for most government engineering and general science examinations.

Elastic collisionsInelastic collisionsMomentum calculationKinetic energy principlesVelocity after impact

Collisions, Momentum and Kinetic Energy Questions

Multiple choice

A 500 kg object is moving at a velocity of 70 m/s. What is its kinetic energy?

  1. 1225000 J

  2. 2450000 J

  3. 4900000 J

  4. 9800000 J
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The kinetic energy of the object is given by the formula $K = rac{1}{2}mv^2$. Substituting the values of $m$ and $v$, we get $K = rac{1}{2}(500 kg)(70 m/s)^2 = 2450000 J$.