Question

a boy pushes a toy car with a force of 50 n. if boy takes 50 s to displace the car by 2 min the direction of force. find the power (in watt) spent by the boy.

Answer 1

The power spent by the boy pushing the toy car with a force of 50 N for 2 m in 50 s is 2 Watts.

Step-by-step explanation:

To calculate the power spent by the boy pushing a toy car, we need to first find the work done and then divide that by the time taken to do this work. Work is defined as the force applied in the direction of the displacement times the displacement itself. In this question, the boy applies a 50 N force and the displacement is 2 m in the direction of the force. So, the work done (W) is given by:

W = force × displacement

Here, W = 50 N × 2 m = 100 Joules.

Now, to find out the power (P), which is the rate at which work is done, we divide the work by the time (t) taken:

P = work done / time taken

P = 100 J / 50 s = 2 Watts.

Hence, the power spent by the boy while pushing the car is 2 Watts.