4.00 × 10⁵ J of work are done on a 1110 kg car while it accelerates from 10.0 m/s to some final velocity.Find this final velocity. A)28.6 m/s B)22.9 m/s C)25.7 m/s D)31.5 m/s

Question

Quizplus · Accepted Answer

The work-energy principle states that the work done on an object is equal to the change in its kinetic energy. The initial kinetic energy is (1/2) * 1110 kg * (10 m/s)^2. The final kinetic energy is (1/2) * 1110 kg * v^2. Setting the work done equal to the change in kinetic energy and solving for v gives approximately 28.6 m/s.

400 × 105 J of Work Are Done on a 1110

400 × 10⁵ J of Work Are Done on a 1110