Question

3000kg truck is moving at a speed of 72km/hr calculate kinetic energy

Answer 1

Answer:

it's 6,00,000 joules

Explanation:

1/2 m *v*v

so,

1/2 * 3000*20*20

=6,00,000 joules

we take velocity as 20 because we need metre per second. Therefore we have to convert km per hour to metre per sec. And to convert it multiply 72 by 5/18.

Thus we get 20 metres per second. And ya here's your answer.