How do i write newton's second law for parallel directions

Aball bearing at 220.0 °c is dropped into a cup containing 250.0 g of water at 20.0 °c. the water and ball bearing come to a temperature of 30.0 °c. what is the heat capacity of the ball bearing in j/°c? (hint: how are the algebraic signs of q related for the ball bearing and the water? )

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Amira pulls a 3 pound wagon 4 feet. how much work has she done?