A disk of radius R, mass M, and moment of inertia I - (1/2)MR2 rolls without slipping down an incline and onto a horizontal table. The disk then continues to the right and goes up a frictionless ramp. The disk starts at rest at a height h above the table, as shown. What is the speed of the center of mass of the disk when it reaches the bottom of the ramp?

Solve both correctly. I will rate accordingly with 2-3 votes. Both are one question with 2 parts of horizontal and vertical.

A child sits on the edge of a spinning merry-go-round that has a radius of 2.6 m. The child's speed is 3 m/s. What is the child's acceleration?

Starting at 10am, you bicycle at an average speed of 15 mph until noon when you enter the mountains. From noon until 4pm you average only 10 mph. What is your average speed over the entire 6 hour trip?

A parachuter of mass 139 kg above Earth (g = 10 m/s2) experiences a drag force modeled by -0.04 v (N).  If the parachuter is released from rest, how fast, in m/s, will the jumper be falling after 1,027 s? (Assume the parachuter doesn't reach the ground in this amount of time.)(I want the speed.) (Please answer to the fourth decimal place - i.e 14.3225)

Which figure shows A - B ? choice (a) O choice (d) O choice (b) O choice (c) (b) O (d)

What is the answer for this question? a,b and c.

On a highway curve with radius 44 m, the maximum force of static friction (centripetal force) that can act on a 1,123-kg car going around the curve is 8,727 N. What speed limit should be posted for the curve so that cars can negotiate it safely in  m/s?

my question is: During a NASCAR race a car goes 68 m/s around a curved section of track that has a radius of 260 m. What is the car's acceleration?

A student swings a 0.5 kg rubber ball attached to a string over her head in a horizontal, circular path. The string is 1.5 meters long and in 50 seconds the ball makes 100 complete circles. what is the speed of the ball? what is the ball's centripetal acceleration? what is the ball's centripetal force?