Other Physics Answers

A 45kg block ar rest was pushed by a 280N horizontal force up a 30degree inclined plane with a roughness coefficient of 0.15, what is the netforce acting on the block

There are three (3) cars moving differently with respect to the earth. Suppose that Car A is moving 20km/h

20km/h to the east, Car B is moving 8km/h

8km/h to the east, while Car C is moving 5km/h

5km/h to the west.

a. What is the velocity of Car A with respect to Car B?

b. What is the velocity of Car C with respect to Car B?

Joey and his friends are pushing a piece of driftwood which they will be using in their landscaping project. They pushed the wood by applying the following forces:

Joey: 5 N, north

Friend 1: 2.2 N, west

Friend 2: 3.86 N, 55° north of west

What is the net force applied by Jerry and his friends on the wood?

The two ski players are about to slide down from a height of the same measurement. With the given values of their masses, describe the gravitational potential energy of the two players.

player 1 = 60 kg

player 2 = 50 kg

Calculate the gravitational potential energy of a system composed of a perfectly spherical planet with mass M and radius R and a rocket of mass m when the rocket is at the surface of the planet. Show your answer in equation form.

A chair of mass 12 kg is sitting on the horizontal floor, the floor is not frictionless. You push the chair with a force F=40N that is directed to an angle of 37° below the horizontal, and the chair slides along the floor. a.Draw a clearly labeled-body diagram for the chair. b.Use your diagram and Newton's law to calculate the normal force that the floor exerts on the chair

A man is marooned at rest on level frictionless ice. In desperation, he hurls his shoe to the right at 4.1m/s. If the man weighs 385 N and the shoe weighs 2.1N, the man moves to the left with a speed of...

Block A and B are moving toward each other. A has a mass of 2.6 kg and a velocity of 5.3m/s, while B has a mass of 6.7kg and a velocity of −7.6m/s. They suffer a completely inelastic collision. During the collision, how much kinetic energy is lost?

A 41.5-N puck is traveling at 4.7m/s. It strikes a 11.6-N puck, which is stationary. The two pucks stick together. Give the common final speed of the two.

An object hits the ground travelling at 40 ms-1 . It is brought to rest in 0.02 s . What is its acceleration ?