A 1599 kg car is traveling down the road at 83.4 km/h. While traveling at this rate of speed, what is the kinetic energy of this vehicle in kilojoules?

Ek=

A 56.87 g sample of a substance is initially at 30.0 °C. After absorbing 1475 J of heat, the temperature of the substance is 138.4 °C. What is the specific heat ( ) of the substance?

c=