Speed of the police van, \(\text v_p\) = 30 \(\text{km}/\text h\) = 8.33 \(\text{m}/\text s\)
Muzzle speed of the bullet, \(\text v_b\) = 150 \(\text{m}/\text s\)
Speed of the thief’s car, \(\text v_t\)= 192 \(\text{km}/\text h\) = 53.33 \(\text{m}/\text s\)
Since the bullet is fired from a moving van, its resultant speed can be obtained as:
= 150 + 8.33 = 158.33 \(\text{m}/\text s\)
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:
\(\text v_{bt}\)= \(\text v_b-\text v_t\) = 158.33 – 53.33 = 105 \(\text{m}/\text s\)
The rate at which an object covers a certain distance is commonly known as speed.
The rate at which an object changes position in a certain direction is called velocity.
Read More: Difference Between Speed and Velocity