Question

3.
3
Two cars are moving in the same direction with a speed
of 30 km h-!. They are separated from each other by
5 km. Third car moving in the opposite direction meets
the two cars after an interval of 4 minutes. The speed of
the third car is
(a) 30 km h-1
(b) 35 km h-1
(c) 40 km h-1
(d) 45 km h-1
A particle is proiected from the ground with an initial speed​

Answer 1

Answer:

45km/h is the correct answer

Explanation:

Since the two cars are moving in the same direction with same speed therefore relative speed between two cars is zero.

Let the relative speed of the third car be w.r.t the two cars.

Relative velocity of the third car:

(4/60)h

5km =75km/h

Actual velocity of the third car:75−30=45km/h

plzz let me know that my answer is correct or not