A police jeep is chasing with, velocity of 45 km/h a thief in another jeep moving with velocity 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
Effective speed of the bullet
=speed of bullet + speed of police jeep
=180m/s +45 km/h =(180 +12.5)m/s=192.5 m/s
Speed of thief's jeep=153 km/h=42.5 m/s
Velocity of bullet w.r.t thief's car=192.5-42.5 -150m/s