Question

thief's car is moving with a speed of 10m/s . A police Van chasing this car with a speed of 5m/s fires at the thief's car with muzzle with velocity 72 km/h . find the speed with which the bullet will hit the car

Answer 1

As the bullet was fired from a running vehicle, the velocity of the vehicle will add up in the bullet.

The relative speed of the bullet
= speed of bullet + speed of police van
=[(72x1000)/3600] + 5
=20+5
=25 m/s

So, the bullet will hit the car with the speed of 25m/s

Answer 2

15 m/s is the right answer