How much energy is needed to change the speed of a 1600 kg sport utility vehicle from 15.0 m/s to 40.0 m/s?
A) 1.10 MJ
B) 10.0 kJ
C) 20.0 kJ
D) 40.0 kJ
E) 0.960 MJ

Question

Quizplus · Accepted Answer

The change in kinetic energy is calculated using the formula ΔKE = 0.5 * m * (v_f^2 - v_i^2). Substituting the given values: ΔKE = 0.5 * 1600 kg * ((40.0 m/s)^2 - (15.0 m/s)^2) = 1.10 MJ.

How Much Energy Is Needed to Change the Speed of a 1600