A solid cube is made from steel before heated to 200°c. what radiates the most heat?

Can anybody me with this? ? (picture included.)

A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s

Work = force × a. work b. energy c. distance d. momentum