Recent content by blee2x2

Homework Statement a tennis ball of mass m = 0.075kg is thrown at a wall with a speed of v = 15m/s. It strikes the wall at a 45˚ angle and rebounds with the same speed at 45˚. What is the impulse given by the wall? Homework Equations impulse = Change in mass x Change in velocity The...

So since the Friction coefficient is more than 1... that just means it is stronger than the normal force? but is that the minimum?

Homework Statement What is the minimum coefficient of friction needed between the tires and the ground so you make the turn safely?[/B] Car= 1394.7kg You=75kg Radius of turn = 40m Velocity = 20m/s Homework Equations Fnet = MAc (Ac = centripetal Acceleration) = Force of friction Force of...

my linear equation would be Force = .5586N/m/s^2(a) + .2097N

I have a graph of force vs. acceleration of a kart on a a ramp that i manually pushed back and forth with my hand. The mass of the the kart is .6485kg and when i did the linear fit it said that slope of the graph was .5586N/m/s^2 and the intercept .2097 N My question is would i see the mass of...

You have a piano that you have just pushed to the top of the 3m long ramp that goes into the truck. The ramp is at a 20-degree angle. You think your friend has a grip on it and she think you do when you all let go. How long do you have before the piano gets to the bottom of the ramp? Assume...