n asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has a mass of 4.8× 104 kg, and the force causes its speed to change from 7700 to 5600m/s. (a) What is the work done by the force? (b) If the asteroid slows down over a distance of 1.4× 106 m determine the magnitude of the force

A raft is being dragged along a channel by two chains dragged to the right. The tension in each chain is T =10 kN and each chain is being pulled at an angle of θ = 200 relative to the direction of motion. How much work will be done in pulling this raft a distance of 4.0 km?

An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has a mass of 5.8× 104 kg, and the force causes its speed to change from 6700 to 5100m/s. (a) What is the work done by the force? (b) If the asteroid slows down over a distance of 2.1x 106 m determine the magnitude of the force. (a) Work = (b) F = 260000 i -5470

Your answer is partially correct. The (non-conservative) force propelling a 1.10 x 10-kg car up a mountain road does 7.50 x 106 J of work on the car. The car starts from rest at sea level and has a speed of 26.0 m/s at an altitude of 2.20 x 102 m above sea level. Obtain the work done on the car by the combined forces of friction and air resistance, both of which are non-conservative forces. Number 4757000 Units eTextbook and Media Hint Save for Later Attempts: 4 of 10 used Submit Answer h 77% 74°F Mostly 画 Home End Insert F5 F6 F7 F8 De F9 F10 F1 F12 % Bac 7 8 R Y U | G H J K L VBN M

An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has a mass of 4.2x 104 kg, and the force causes its speed to change from 7500 to 5000m/s. (a) What is the work done by the force? (b) If the asteroid slows down over a distance of 1.7x 106 m determine the magnitude of the force. (a) Work= (b) F= i i

A 325 N force is pulling on an 85.0 kg refrigerator as it slides across a horizontal floor. The force acts at an angle of 25.0° above the horizontal surface of the floor. The coefficient of kinetic friction between the refrigerator and the floor is 0.150, and the refrigerator moves a distance of 5.50 m. Find (a) the work done by the pulling force, (b) the work done by the force of kinetic friction, (c) the net amount of work done on the refrigerator, and (d) if the refrigerator was initially at rest determine the speed of the refrigerator after the 5.50m displacement. (e) Include a force (or free-body) diagram of the situation. ]

An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has a mass of 4.8× 104 kg, and the force causes its speed to change from 7100 to 4900m/s. (a) What is the work done by the force? (b) If the asteroid slows down over a distance of 2× 106 m determine the magnitude of the force.

A puck with a mass of 159.0 g is sliding with an initial velocity 31.0 m/s.  The puck enters a section of rough ice and slows to a speed of 15.1 m/s.  What is the magnitude of the work done on the puck by the rough ice?  Express your answer in Joules to 1 decimal place.

A large cruise ship of mass 6.30 x 107 kg has a speed of 11.8 m/s at some instant. (a) What is the ship's kinetic energy at this time? (b) How much work is required to stop it? (Give the work done on the ship. Include the sign of the value in your answer.) (c) What is the magnitude of the constant force required to stop it as it undergoes a displacement of 3.90 km?

A large cruise ship of mass 6.70 ✕ 107 kg has a speed of 10.4 m/s at some instant. (a) What is the ship's kinetic energy at this time? J(b) How much work is required to stop it? (Give the work done on the ship. Include the sign of the value in your answer.) J(c) What is the magnitude of the constant force required to stop it as it undergoes a displacement of 2.70 km?