Question

You are pushing a box up a 10m ramp with a force of 40N. What is the power if you pushed the box for 4 seconds?

A) 100 W
B) 160 W
C) 200 W
D) 320 W

Answer 1

To calculate the power of pushing a box up a 10m ramp with a 40N force for 4 seconds, one multiplies the force by the distance to find work, then divides work by time. The total work done is 400J, and dividing this by the 4 seconds gives a power of 100W, so the correct answer is A) 100 W.

Step-by-step explanation:

The question pertains to calculating the power when pushing a box up a ramp. Power is defined as the rate at which work is done. In this case, the work done is equal to the force applied to the box times the distance over which the force is applied (Force × Distance). Since you're pushing the box up a 10m ramp with a force of 40N, the total work done is 40N × 10m = 400 Joules.

Now, to find the power, you'll use the formula Power = Work / Time. You've done 400 Joules of work over 4 seconds, so the power is 400J / 4s = 100W. Therefore, the correct answer is A) 100 W.