Question

Object A has a mass of 15 kg and a velocity of 7 m/s. Object B has a mass of 15 kg and a velocity of 5 m/s. Which object has more kinetic energy?

Answer 1

The kinetic energy of an object is given by the formula: KE = 0.5 * mass * velocity^2

Using this formula, we can calculate the kinetic energy of both objects:

For object A:

KE_A = 0.5 * 15 kg * (7 m/s)^2 = 367.5 J

For object B:

KE_B = 0.5 * 15 kg * (5 m/s)^2 = 187.5 J

Therefore, object A has more kinetic energy than object B.