person pushes a sled with a constant horizontal 310 N force across a horizontal surface.  The sled accelerates uniformly from rest to 4.62 m/s in 4.1 s.  The coefficient of kinetic friction is 0.26.  Determine the mass

3. (a) A 1700 kg car is parked on a road that rises 18° above the horizontal. What are the magnitudes of (i) the normal force and (ii) the static frictional force that the ground exerts on tires? (b) A 52.5 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.678 and 0.283, respectively. What horizontal pushing force is required to (i) just start the crate moving and (ii) slide the crate across the dock at a constant speed?

F(t) Force_Crate Known values: Mass of Block 68 kg TT Hs μk 0 0.63 0.53 26° Problem Statement: A crate is initially at rest on a sloped surface, when a force is applied: F(t) where t is in seconds. Answers: When t=44.47 seconds, the crate has not yet started moving. Find the magnitude of the friction force at that time: 317.771 N The direction of the friction force at that time is: down the slope Find the time required for the crate to start moving: Find the crate's speed when t=174.9 s: 9.485 m/s Be sure to include units with your answers. 169.756 S 240+0.2 N,

While loading furniture into a truck, you push a 1.56 kg chair up a 14.7 degree ramp, with a horizontal force of 12.1 N. How long does it take to reach a speed of 4 m/s, starting from rest? The coefficient of kinetic friction chair - ramp is 0.345.

A 2.88 kg mass begins at rest and slides 2.84 m down an incline of 49.6 degree in a time of 1.61 s. What is the coefficient of kinetic friction regarding this system if only the force due to gravity, the force of kinetic friction, and the normal force are considered? Enter a number rounded to 3 decimal places

A force of 9.4N pulls horizontally on a 1.3-kg block that slides on a rough, horizontal surface. This block is connected by a horizontal string to a second block of mass m2 = 1.90kg on the same surface. The coefficient of kinetic friction is μk = 0.23 for both blocks.A) What is the acceleration of the blocks?B) What is the tension in the string?

A constant force Fa pushes a 22.5-kg box across a rough horizontal surface. The magnitude of Fa is 185 N and the force is inclined at an angle of θ = 30.0° below the horizontal. The coefficient of kinetic friction between the box and the surface is μk = 0.500. What is the magnitude of the box's acceleration?

A 98.0-kg baseball player slides into second base. The coefficient of kinetic friction between the player and the ground is μk = 0.665. (a) What is the magnitude of the frictional force? (b) If the player comes to rest after 1.27 s, what is his initial speed? (a) Number   Units                                                             (b) Number   Units

A 15.0 kg box is placed on the horizontal surface of a table where the coefficient of kinetic friction between the box and the table is 0.150. This box is connected to a second 2.50 kg box that is hanging off of the table by an inextensible, massless cord that runs over a massless, frictionless pulley. What is (a) the magnitude of the acceleration of the boxes and (b) the magnitude of the tension in the cord? (c) Include a force (or free-body) diagram of the situation.

A 3.00-kg block starts from rest at the top of a 27.5° incline and slides 2.00 m down the incline in 1.30 s. (a) Find the acceleration of the block. m/s² (b) Find the coefficient of kinetic friction between the block and the incline. (c) Find the frictional force acting on the block. N (d) Find the speed of the block after it has slid 2.00 m. m/s