Question

A car with a mass of 1500 kg is moving at a rate of 4 m s . Determine its kinetic energy

Answer 1

Answer:- The Kinetic energy of the car is 12000 J.

Explanation:

Kinetic energy is the energy posessed by an object by virtue of its motion.

$K.E=\frac{1mv^2}{2}$

m= mass of object = 1500 kg

v= velocity of object = 4 m/s

Putting in the values in the equation:

$K.E=\frac{1500kg\times 4^2ms^{-1}}{2}$

$K.E=12000kgm^2s^{-2}=12000N$      $1kgm^2s^{-2}=1J$

Thus Kinetic energy of the car is 12000 J.

Answer 2

the correct answer is b) 12000 J