A train weighs 16,000 KN. The train resistance is constant at 96,000 N.If 6000 hp are available to pull up a 2% grade, what will be its speed in kph? If 1 hp = 746 watt 16,000 F=96.000 100

A pump is capable of developing 4.00 kW of power. How many liters of water per minute can be lifted a distance of 35.0 m? (1L of water = 1 kg)

a force of 30.0 N is required to push a 20.0kg mass 2.00 m across the floor. the mass is then lifted a distance of 1.00 m to the top of a shelf. how much work was done on the mass?

An electric hoist working at 65% efficiency lifts 255 kg to a height of 6.5 m drawing 1470 W of power. Assuming a constant speed, how long did it take to raise the mass?

A motorist runs out of gas on a level road 210 m from a gas station. The driver pushes the 1,120 kg car to the gas station. If a 180 N force is required to keep the car moving, how much work (in J) does the driver do?

A man pushes a lawn mower on a level lawn with a force of 194 N. If 49% of this force is directed forward, how much work is done by the man in pushing the mower 4.9 m?

A shopper pushes a grocery cart 36.6 m on level ground, against a 13.1 N frictional force. The cart has a mass of 15.2 kg. He pushes in a direction 17.8º below the horizontal. If the initial velocity was 1.8 m/s, and final speed was 15.4 m/2. What is the work done by the pushing force in unit of Joule?

A dog races up the stairs in a time of 1.80 seconds.  If the stairs are 12 feet high, how much power in hp is the dog putting out?  The weight of the dog is 48 lbs.

A 2500-W electric motor raises a 500-kg sack from a height of 2.0 m to 24.0 m in 50 s. The efficiency of the motor is: 8.8 % O 40 % O 86 % O 0.42 % O 95 %

A man pushes a lawn mower on a level lawn with a force of 206 N. If 31% of this force is directed forward, how much power does he expend in pushing the mower 7.3 m in 10 s?