A car traveling at 20 m/s decelerates at a constant rate to a complete stop after traveling 40m. a) What is the average speed of the car during this process? b) How long does it take for the car to stop?

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.

Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.

Match each scenario to the form of energy it represents