Question

a car is traveling 60km/h & stoped on brake. the mass of the car is 5000kg. whats the kinetic energy?

Answer 1

Velocity of the car = 60 km/h or 16.67 m/s

Mass of the car = 5000 kg

The formula for kinetic energy = $\(\frac{1}{2} \times m \times v^2\)$

Plugging the values in the above equation of kinetic energy:

Kinetic energy = $\(\frac{1}{2} \times 5000 \times 16.67^2\)$

Kinetic energy = 694722 J

Kinetic energy = $\( 6.94 \times 10^5\)$ J

Hence, the kinetic energy of the car = $\( 6.94 \times 10^5\)$ J

Option (A) is correct