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300 W
300 W
500 light seconds on my meter.
If it takes 150 N of force to move a box 10 meters, 1500 joules (J) of work is done. This can also be expressed as 1.5 kilojoules (kJ).
Power = (energy) / (time) = (35 x 5) / 19 = 175 newton-meters / 19 seconds = 9.2105 watts (rounded)
300 W
300 W
gh
two watts a second
Depends on how fast your walking.
First mulitiply Newton x meter to get the energy (or work) required. Then divide the result by the time to get the power.
500 light seconds on my meter.
The work required to move the truck is 600 N (600 kg-m/sec2) times 30 meters = 18000 joules. If this is done in 15 seconds, the average power was 1200 watts (kg-m2/sec3).
The person's speed is 2 meters per second. The power required for him to accomplish that depends on his weight, on his efficiency of movement, on whether he's moving horizontally or vertically, etc., all of which the question neglects to specify.
To lift a 950-N load 3 meters requires (950 x 3) = 2,850 joules of energy.The power is the rate at which the energy is delivered. It takes more powerto lift the load faster.The power used to lift this load is (2,850 joules) divided by (the number of seconds it takes),and the unit of the answer is watts.
1200j