On a velocity time graph, how would you represent a rest in the middle of the graph. 

Eg. For the first 4 minutes, someone drives at 5.0, takes a rest for 5 then begins again. 

How do you find max velocity? 

you attacha force scale to a toboggan resting in the snow. What is the minimum value of frictional force, and under what conditions would you observe that value on your force scale?

Someone is able to pull the 1800 kg shack at a constant velocity with a force of 190 N. Calculate the coefficient of friction between the shack and the ice. 

A roofer pulls a 25.0 kg bundle of shingles up the side of a roof that has a 29.0 degree pitch. She applies a force to the shingles, counteracting the 18.5 N of friction, to accelerate the shingles at a rate of 0.50 m/s2. Calculate the force she applied to the shingles. 

Your 1500 kg truck enters a 35.0 m radius traffic circle. It is an icy day and the coefficient of static friction between your tire and the roads is 0.15. What is the maximum speed that you can go through the traffic circle without sliding? Answer in km/h. 

If the string tripled in length but the speed of the ball remained the same, show mathematically how the inward force on the ball would change.

If the length of the string was unchanged but the speed of the ball doubled, show mathematically how the inward force on the ball would change.

A 60.0-kg athlete jumps vertically upward

from the ground to a height of 0.910 m above

the ground. What was the athlete’s initial

vertical speed?

It's physics grade 10 and I just don't know what formula to use or how to solve these