A 6000N crate is pulled across an icy surface. The coefficient of kinetic friction is 0.05. The work done in pulling the crate 1000 m at constant velocity is:

A 2.8-kg uniform cylindrical wheel with a radius of 18 cm is rotating at 1500 rpm. How much torque is required to stop it in 6.0 s?

Good luck on your midterms

A projectile is launched from the ground at an angle of 15° above the horizontal. If the projectile is launched at the same velocity at an angle of _____, it will travel the same horizontal distance.

A 1640 kg merry-go-round with a radius of 7.50 m accelerates from rest to a rate of 1.00 revolution per 8.00 s. Estimate the merry-go-round as a solid cylinder and determine the net work needed for this acceleration.

A meter stick is supported at the 50-cm mark. A 0.40 kg mass is hanging at the 20 cm mark and a 0.60 kg hanging at the 80-cm mark. Where should a third mass that weighs 0.30 kg be hung to keep the stick balanced?

The escape velocity at the surface of Earth is 8 km/s. What is the escape velocity at the surface of a planet whose radius is 4 times and whose mass is 100 times that of Earth?

A 5-kg fish moving at a speed of 1 m/s swallows 1-kg fish at rest. Its speed after this is:

A 1300 kg sports car can accelerate from 0 to 27 m/s in 5.2 seconds. How much power from the engine is directly going into accelerating the car?

In an inelastic collision, the final total momentum is _____