August 30, 2010, 12:21 am
1: suppose a car traveling 70 m/s brakes and takes 3 s to stop. what is the accelerationin ms^2? How far does the car travel before stopping?
2: Describe the motion of a skate-board as it accelerates down a half-pipe and then up the other side. What would happen in the up side of the pipe were not as steep as the down side?
3: Suppose you traveled to nearby planet and weighed yourself when you landed. If your mass is 50 kg and your portable bathroom scale reads 1240 N, what is the acceleration due to gravity on this planet? What planet do you think you are on?
4: Would a heavier marble accelerate faster, slower, or at the same rate as a lighter one?
5: Why do you feel heavier on an elevator? when do u begin to feel lighter? Why?
6: Your friend pushes you with a force of 50 N while you're skating. If your mass is 45 kg, what is your acceleration?