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

150 m/s

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27 m/s

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450 m/s

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250 m/s

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Solution

The correct option is A 150 m/s
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

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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

The correct option is A 150 m/sEffective 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

The correct option is A 150 m/s
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