Question

4. Determine the kinetic energy of a 800-kg roller coaster car that is moving with a

speed of 20.0 m/s. KE=0.5mv²

Answer 1

Below

Step-by-step explanation:

KE = 1/2 m v^2 just plug in the numbers given in the Q

KE = 1/2 (800 kg) (20 m/s)^2 = 160 kJ