A 2kg block starts from rest at the top of a 30 degree incline and slides a distance of 2m down the incline in 1.3s. (There is friction in this problem).  1. find the magnitude of the acceleration of the block. 2. What is the frictional force and its direction acting on the block? 3. Find the speed of the block after it has slid 2m.

Mr. Vollmayer pulls his children (21kg and 24kg) on a sled (5kg). The force of the friction on the sled is 60N and he pulls upward at a 25 degree angle relative the the ground. How hard must he pull to move the sled at a constant velocity? what is the normal force acting on the sled?

The conveyor belt is designed to transport packages of various weights. Each 10-kg package has a coefficient of kinetic friction u. = 0.31. The speed of the conveyor is 4 m/s , and then it suddenly stops. (Figure 1) Part A Determine the distance the package will slide on the belt before coming to rest. Express your answer to three significant figures and include the appropriate units. ? Figure 1 of 1 S = Value Units Submit Request Answer B Provide Feedback

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A steel cable lying flat on the floor drags a 20 kg block across a horizontal, frictionless floor. A 110 N force applied to the cable causes the block to reach a speed of 3.9 m/s in a distance of 2.0 m. What is the mass of the cable? Express your answer with the appropriate units. m= Submit μA Value Units ? Units input for part A Previous Answers Request Answer