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).
250 W
300 W
250 W
300 W
300 W
gh
500 light seconds on my meter.
Power (the rate of energy use) is calculated as the product of the energy exerted (work) divided by the time over which the energy is released. P = W/t To solve the example, multiply the force in Newtons by the displacement in meters to find the work in joules, then divide by the time to find the power required, in watts (joules/second, or kg-m2/sec3) 100 N x 10m = 1000 joules divided by 10 seconds = 100 watts
300 W
300 W
First mulitiply Newton x meter to get the energy (or work) required. Then divide the result by the time to get the power.
Power = (energy) / (time) = (35 x 5) / 19 = 175 newton-meters / 19 seconds = 9.2105 watts (rounded)
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.
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).
If it takes 3400J to lift a rock onto a ledge, what power is required to lift the rock onto the ledge in 4 seconds Power is energy per unit time. It is measured in watts (joules per second). As such if 3400 joules is transfeered in 4 seconds, the power equals 3400 / 4. The power required is therefore 850 watts.
gh
two watts a second
65 km/h = 18.056 meters / second60 / 18.056 = 3.323 seconds so it takes approximately 3.3 seconds
Depends on how fast your walking.
500 light seconds on my meter.