A car takes 4 hours to reach the destination by travelling at a speed of 60` km/h`. How long will it take if the car travels at a speed of 80 `km/h`?

A car A is traveling on a straight level road with a uniform speed of 60 km/h. It is followed by another car B which is moving with a speed of 70 km/h. When the distance between them is 2.5 km, the car B is given a deceleration of 20 "km/h"^2 . After what distance and time will B catch up with A

A car covers half the distance at a speed of 50 km/h and the other half at 40 km/h. Fined the average speed of the car. (44.44 km/h).

Make a mathematical model for the problem given below and solve it. Suppose a car starts from a place A and travels at a speed of 40 Km/h towards antother place B. At the same time another car starts from B and travels towards A at a speed of 30 Km/h. If the distance between A and B is 100 km, after how much time will that cars meet?

A car travels the first half of a distance between two places a speed of 30 km/hr and the second half of the distance a 50 km/hr.The average speed of the car for the whole journey is