7. How do Newton’s laws of motion explain why it is important to keep the ice smooth on a hockey rink so that players can pass a puck as quickly as possible? *

Acurve connects the data points that are plotted. (physical science chapter 11 motion)

Picture a all traveling at a constant speed around the inside of a circular structure. is the ball accelerating? explain your answer

Aboxcar traveling at 12 m/s approaches a string of 5 identical boxcars sitting stationary on the track. the moving boxcar collides and links with the stationary cars and they all move off together along the track. what is the final speed of the cars immediately after the collision? (you may take the mass of each boxcar to be 18,537 kg.)