Use the problem below to answer the following questions. A 300 kg cart, originally at rest, is launched off of the top of a small 5 m hill by a spring that is
compressed 3 m. If the spring stiffness (constant) is 4000 N/m, then how fast was the cart moving at
the bottom of the hill?

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? )

A2000 kg car is rounding a curve of radius 200 m on a level road. the maximum frictional force the road can exert on the tires of the car is 4000 n. what is the highest speed at which the car can round the curve?

Argon, neon, and xenon are examples of