A horizontal force of 90.7 N is applied to a 60.5 kg crate on a rough, level surface. If the crate accelerates at 1.18 m/s2, what is the magnitude of the force of kinetic friction (in N) acting on the crate?

Two workers are sliding 390 kg crate across the floor. One worker pushes forward on the crate with a force of 440 N while the other pulls in the same direction with a force of 240 N using a rope connected to the crate. Both forces are horizontal, and the crate slides with a constant speed. What is the crate's coefficient of kinetic friction on the floor?

upward acceleration of he is pulled upward at a constant velocity? Ans: 999 N; Question 14. To hoist himself into a tree, a 72.0-kg man ties one end of a nylon rope around his waist and throws the other end over a branch of the tree. He then pulls downward on the free end of the rope with a force of 367 N. Neglect any friction between the rope and the branch, and determine the man's upward acceleration. Use g -9.80 m/s². Ans: 0.394 m/s² ung whose weight is 519 N is being pulled up vertically by a rope from the that and without

Consider a wooden ramp angled 30.1 degrees above horizontal. If a 10.2-kg wooden block is given a strong shove up the ramp so that it has an initial velocity of 28.6 m/s, how long (in seconds) will it take the block to reach its maximum height (before it starts sliding down)? The coefficient of kinetic friction between the block and the ramp is 0.410.