Two freight cars, each with a mass of 2.5x104 kg collide. One was initially moving at 3.7
m/s; the other was at rest. They stick together. What is their final speed?

Prompta snowboarder stands at the top of a hill and decides to see if he can increase his speed on his next trip down the slope.describe one thing the snowboarder could do to incrlase his speed on the slope. explain why this would cause his speed toincrease relate one of newton's laws to this problem.

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?

Substances that assume the shape of their container, but do not have a definite size are called