Question

A car’s engine generates 100,000 w of power as it exerts a force of 10,000 n. How long does it take the car to travel 100 m?.

Answer 1

Answer:

10

Explanation:

Engine generates 100,000\ W power

Force exerts F=10,000\ N

Distance traveled d=100\ m

work done is given by

W=F\cdot d\\W=10,000\times 100\\W=10^5\ J

Also, Energy is given as

\Rightarrow E=P\cdot t

Insert the values

\Rightarrow 10^6=100,000\times t\\\\\Rightarrow t=\dfrac{10^6}{10^5}\\\\\Rightarrow t=10\ s