An 8 kg block initially at rest is pulled to the right for 3 m with a force of 12 N over a surface. Determine its final speed if: (a) the surface has no friction and (b) the surface has a coefficient of kinetic friction of 0.15

A 19-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 29 N. Starting from rest, the sled attains a speed of 2.9 m/s in 9.7 m. Find the coefficient of kinetic friction between the runners of the sled and the snow.

A 1,596.6 kg car is skidding to a stop on a level road with a coefficient of kinetic friction = 0.6. How fast was the car going if it leaves 66 m skid marks?

A glider of mass 0.275kg is placed at rest on an air track that has an angle of inclination of 10°.  The height of the glider above the table is 30cm.  The glider is released traveling 1.15m down along the track.  When the glider is at 10cm above the height of the table, the velocity is 1.5m/s.  What is the frictional force acting on the glider?

A 2.5kg ball is placed on top of a 15m tall ramp. Assuming the ball and the ramp have a coefficient of kinetic friction of 0.25, determine the speed of the ball at the bottom of the ramp.

A 10.0 kg block initially at rest is pulled to the right along a horizontal, frictionlesssurface by a constant horizontal force of 10.0 N. Find the speed of the block after ithas moved 2.0 m.(a) 2 m/s (b) 10 m/s (c) 12 m/s (d) 22 m/s

As shown in the figure below, a 2.25 kg block is released from rest on a ramp of height h. rough patch 15.0 cm When the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width 15.0 cm that has a coefficient of kinetic friction u, = 0.690. Find h (in m) such that the block's speed after crossing the rough patch is 3.50 m/s. (Enter a number.) m

A girl on a skateboard (total mass of 40 kg) is moving at a speed of 10 m/s at the bottom of a long ramp. The ramp is inclined at 20° with respect to the horizontal. If she travels 14.2 m upward along the ramp before stopping, what is the net frictional force on her?

f-5-3 N 18. A block of ice with mass 2.00 kg slides 0.605 m down an inclined plane that slopes downward at an angle of 30.2° below the horizontal. If the block of ice starts from rest, what is its final speed? You can ignore friction. Express your answer in meters per second.

A warehouse worker is pushing a 90.0 kg crate with a horizontal force of 276N at a speed of v = 0.875m/s across the warehouse floor. He encounters a rough horizontal section of the floor that is 0.75 m long and where the coefficient of kinetic friction between the crate and floor is 0.353. (a) Determine the magnitude and direction of the net force acting on the crate while it is pushed over the rough section of the floor. magnitude Ndirection ---Select--- up down in the same direction as the motion of the crate in the opposite direction as the motion of the crate (b) Determine the net work done on the crate while it is pushed over the rough section of the floor. J (c) Find the speed of the crate when it reaches the end of the rough surface. m/s