Question

A police van moving on a highway a speed of 30 kmh fire a bullet at a theif 's a car speeding away in the same direction with a speed of the bullet is 150ms with what speed does the bullet hit the theif's car?

Answer 1

Answer:

570 km/hr

answer is 570 km/hr

Answer 2

Answer:

105 m/s

Explanation:

Speed of the police van, Vp = 30 km/h = 8.33 m/s

Muzzle speed of the bullet, Vb = 150 m/s

Speed of the thief's car, Vt = 192 km/h = 53.33 m/s

Since the bullet is fired from a moving van, its resultant speed can be obtained as: = 150 + 8.33 = 158.33 m/s

Since both the vehicles are moving in the same direction, the velocity with which the bullet hits the thief's car can be obtained as:

Vbt = Vb - Vt

= 158.33 - 53.33

= 105 m/s