A car of mass 1000 kg is traveling at a speed of 30 m/s. If the car slows down to 15 m/s, by what percentage does its kinetic energy decrease?
The kinetic energy of an object is given by the formula:
Where:
is the mass of the object,
is the velocity of the object.
Initial Kinetic Energy
The initial kinetic energy of the car is:
Final Kinetic Energy
The final velocity is 15 m/s, so the final kinetic energy is:
Click "Show Answer" to reveal the answer and analysis
Access thousands of practice questions with detailed explanations on Scholardog.