George pushes a wheelbarrow for a distance of 12 meters at a constant speed for 35 seconds by applying a force of 20 newtons. what is the power applied to push this wheelbarrow? a. 1.2 watts b. 3.4 watts c. 17.15 watts d. 13 watts

To calculate the power applied to push the wheelbarrow, we use the formula

Here, F is applying force to pushes a wheelbarrow for a distance l in time t s.

Given, , and .

Substituting these values in above equation, we get

Thus, the power applied to push this wheelbarrow is 6.9 W.

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min

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