Which has the greater kinetic energy-a 1-ton car moving at 30 m/s or a half-ton car moving at 60 m/s?
A) The half-ton car
B) The 1-ton car
C) Both have the same kinetic energy.
D) It cannot be determined because the mass of the cars can't be found.

Question

Quizplus · Accepted Answer

The kinetic energy (KE) is given by the formula KE = 1/2 mv^2, where m is the mass and v is the velocity. For the 1-ton car (1000 kg) moving at 30 m/s, KE = 1/2 * 1000 * 30^2 = 450,000 Joules. For the half-ton car (500 kg) moving at 60 m/s, KE = 1/2 * 500 * 60^2 = 900,000 Joules. Therefore, the half-ton car has greater kinetic energy.

Which Has the Greater Kinetic Energy-A 1-Ton Car Moving at 30