Mechanics | Relativity Answers

To travel up a uniform incline at a constant speed of 198 km/h, the wheels of a 1.35 x 10 to the power of 3 kg car generates a driving force of 590 N. What is the power output at the wheels of the car?

A spring is compressed by a 5.60 kg mass. The mass begins from rest at a height (h1) of .980 m above the base of a frictionless inclined plane. The mass slides down the plane and comes to rest when it has compressed the spring a distance (x) of 8.00 cm. If the spring has an elastic constant of 1.46 x 10 to the power of 4 N/m, how far above the base of the plane (h2) is the mass when it comes to rest?

A 56.0 kg mass is sliding down a frictionless plane at a speed of 4.20 m/s. A force of 55.0N parallel to the plane acts on the mass to pull it up the plane. When the force has acted over a distance of 6.80 m, the mass has a speed of 5.40 m/s. What change in gravitational potential energy occurred while the force acted on the mass?

A child, initially at rest at the top of 3.55 m high slide, slides down to a height of .480 m. At the bottom of the slide, the child has a speed of 2.45 m/s. If the mass of the child is 34.5 kg, what is the change in the mechanical energy of the child?

A block is allowed to slide down a frictionless plane which is inclined at 42 degree with the horizontal. A force of 56. 0 N is applied parallel and toward the top of the plane. If the block has a mass of 15.0 kg, what is the kinetic energy of the block when it has moved 2.50m down the plane?

A block is sliding on a horizontal frictionless surface at a velocity of 12.0 m/s (E). A force of 25.0 N(S) acts on the block, causing it to accelerate to a velocity of 45.0 m/s (45 degree S of E). If the mass of the block is 7.50 kg, what is the work done by the force on the block?

An applied force of 875 N (up) acts on a 4.63 kg mass over a displacement of 4.80m (up). Assuming that no friction is involved in this movement, what is the change in kinetic energy of the mass?

You apply a force of 586 N (215 degree) on an object as it moves over a displacement of 14.8 m (45 degree). What is the work done on the object?

What is the speed of a satellite that orbits about a star with a mass of 3.66 X10 to the power of 32 kg along a circular path with a radius of 4.75 x 10 to the power of 14 m?

1. A particular pass pattern requires a football reciever to run 15m (N) and then 10m (45 degrees W of N). The direction of the resultant displacement is?