Question

police jeep is chasing velocity of 45 km/h. A thief in another jeep moving with a velocity of 153 km/h. police fires a bullet with muzzle velocity of 180 m/s the velocity it will strike the car of the thief is?

Answer 1

Here is answer to your question,
Given: Velocity of police jeep =45km/hr = 12.5 m/s
Velocity of thief’s jeep = 153 km/hr = 42.5 m/s
Velocity of bullet = 180 m/s
Now, since bullet is fired from police jeep which is going at 12.5 m/s, therefore, velocity of bullet is
(180+12.5) = 192.5m/s.
To calculate velocity with which bullet will hit the thief we use concept of relative velocity.
Therefore, we have