A worker pushes a 8.0 kg crate across a level surface with a force of 35.0 N directed at an angle of 25.0° downward from the horizontal. Determine the work done by friction after the crate is pushed 12.0 m if the coefficient of kinetic friction between the crate and the surface is 0.25.

A car of mass 1750 kg accelerates from 0.00 m/s to 35.0 m/s.  What was the net work done on the car? 

p2something.png An object slides a distance d = 9.00 m down an incline of height ∆y = 3.00 m as shown.  Determine the speed of the object at the bottom of the incline if it starts from rest and the coefficient of kinetic friction between the object and the surface is 0.25.

A worker pushes a 8.0 kg crate across a level surface, from rest, with a force of 35.0 N directed at an angle of 25.0° downward from the horizontal. Determine the speed of the crate after the crate is pushed 1.5 m, if the coefficient of kinetic friction between the crate and the surface is 0.25.

p2something.png An object slides a distance d = 9.00 m down a frictionless incline of height ∆y = 3.00 m as shown.  Determine the speed of the object at the bottom of the incline if it starts from rest.

p10(1).png A simple pendulum of length L = 0.75 is pulled back to an angle θ = 35.00 and released.  What is its speed of the pendulum at the bottom of its oscillation?

A child sleds down a 3.5 m tall snowy hill.  Ignoring friction, determine the child’s speed at the bottom of the hill.

p12(1).png Suppose the car starts from rest at position 1. Ignoring friction, determine the car’s speed at position 4.

A 90.0 kg wide receiver traveling east at 15.0 m/s is tackled by a 115 kg linebacker traveling at 8.0 m/s in a direction of 300 west of north.  What are the speeds of the players (assume they stick together) just after the tackle?

A 90.0 kg wide receiver traveling east at 15.0 m/s is tackled by a 115 kg linebacker traveling at 8.0 m/s in a direction of 300 west of north.  What direction are the players traveling in just after the tackle? (assume they stick together)