Question

The batmobile of mass 747kg, traveling at 140km/h, brakes and comes to a stop. Calculate the work done on the batmobile in kilojoules.

Answer 1

Step-by-step explanation:

The work done equals the initial Kinetic Energy of the BatMobile

140 km/hr = 38.89 m/s

KE = 1/2 m v^2

= 1/2 (747)(38.89)^2 = 564861 j = 564.9 kj