# math

posted by .

A small block of mass 0.8kg is placed at the top of a 4m plane, when it is released, it take 3.5 seconds to slide to the bottom. Determine the coefficient of friction, stating assumptions made.

• math -

Johnny is 52 inches tall Max is 65 inches tall. What percent of Johnny's height is Max's height.

• math -

113%

• math -

110%

## Similar Questions

1. ### physics incline

A cord connected at one end to a block which can slide on an inclined plane (incline 27 degrees) has its other end wrapped around a cylinder resting in a depression at the top of the plane (and the other angle at bottom is not a right …
2. ### Math

Block A & B slide on lubricated surfaces for which friction is .1. knowing that the system is released from rest, determine the velocity of block B after 5 seconds block A is 10 N block B 20N and block B is on a 30 degree incline connected …
3. ### Physics

Hi I have a question in Physics A block with mass 50kg is held on a slope. Ù friction coefficient = 0.35 between the plane and the block .. Planets angle v with the horizontal is 25 degrees. How far will the block slide down the plane …
4. ### Physics

Two blocks are stacked one on top of the other. The coefficient of friction between the two blocks is 0.20, and the coefficient of friction between the bottom block and the floor is 0.10. What is the max force you can apple to the …
5. ### Physics - Newtons laws

A block (mass m1 = 8kg) is moving on an inclined plane, coefficient of kinetic friction of 0.45, whose angle is 30degrees. This block is connected to a second block (mass m2 = 22kg) by a cord that passes over a small frictionless pulley. …
6. ### Physics

A mass m1 on a horizontal shelf is attached by a thin string that passes over a frictionless pulley to a 2.5 kg mass (m2) that hangs over the side of the shelf 1.2 m above the ground. The system is released from rest at t = 0 and the …
7. ### Physics

A block is released from rest at the top of an inclined plane. The height of the plane is 5.00 m and it makes an angle of 30.0 degrees with the horizontal . The coefficient of kinetic friction between block and surface is 0.200. What …
8. ### Physics

Can someone help me solve this one? I've tried it a few times, but I don't think I'm getting it right. A block of mass M = 2.2 kg starts from rest at a height of 3.6 m on a fixed inclined plane. The coefficient of kinetic friction
9. ### physics

An 8kg block starts from rest from the top of a plane, inclined at 40o with respect to the horizontal, and slides down at a constant acceleration. If the coefficient of kinetic friction between the block the plane is 0.35 determine …
10. ### physics

An 8kg block starts from rest from the top of a plane, inclined at 40o with respect to the horizontal, and slides down at a constant acceleration. If the coefficient of kinetic friction between the block the plane is 0.35 determine …

More Similar Questions