Question

Relative Velocity

A police jeep is chasing with velocity 45 km/h
another jeep is moving with 153 km/h. Police for
with a muzzle velocity 180 m/s. The bullet strike
of the thief with a velocity
(a) 150 m/s (b) 27 m/s (c) 450 m/s (d) 250
​

Answer 1

Answer:

A) 150m/s

effective speed of bullet

=Speed of bullet+Speed of policejeep

=180m/s+45km/hr

=(180+12.5)m/s

=192.5m/s

Speed of theif's jeep=153km/hr=42.5m/s

Velocity of bullet with respect to theif's jeep=192.5−42.5

=150m/s

Hence A) 150m/s is the correct answer.

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