Question

A car of 5 tonnes is moving with a speed of (v), having a k.e. of 2250kJ. Find the velocity of the car.

Answer 1

Answer:

30 m/s

Explanation:

Data :

  Mass=5 tonnes = 5000kg

  K.E =2250 kJ = 2.250 .10^6 J

Si the formula

         K.E =(1/2)mv^2

             v^2 =(K.E . 2)/m

           v^2 =4.5 .10^6/5000

         v^2 =900

After taking square root on both side

The velocity of the car is

          V =30 m/s