If a person travels `60` `km` in `4` hours in a car, then the speed of the car is
(a) `12` km/hr
(b) `15` km/hr
(c) `20\ ` km/hr
(d) `24\ ` km/hr

A driver having a definite reaction time is capable of stopping his car over a distance of 30 m on seeing a red traffic signal, when the speed of the car is 72 km/hr andover a distance of 10 m when the speed is 36 km/hr. Find the distance over which he can stop the car if it were running at a speed of 54 km/hr. Assume that his reaction time and the deceleration of the car remains same in all the three cases.

If a bus travels a distance of 30 km in 45 minutes. What will be its speed in: km//"hr "

A dog starts chasing to a cat 2 hours later it takes 2 hours to dog to catch the cat.if the speed of the dog is 30 km/h what is the speed of the cat? A. 10 km/hr B. 165 km/hr C. 20 km/hr D. can't be determined

Convert each of the following speeds into m/sec : 27 km/hr

Convert each of the following speeds into m/sec : 16.2km/hr

Convert each of the following speeds into m/sec : 315 km/hr

Change a speed of 12 m/sec into km/hr.

Change a speed of 12 m/sec into km/hr.

Convert each of the following speeds into m/sec : 90km/hr

A person is standing at the edge of a slow moving river which is 1 km wide. He wishes to return to the camp ground on the opposite side of the river for which he may swim to any point on the opposite bank and then walk for the rest of the distance. The campground is 1 km away from the point on the opposite bank directly across from where he starts to swim. If he swims at the rate of 2 km/hr and walks at the rate of 3 km/hr, the minimum time taken by him is approximately 0.6 hr (b) 0.7 hr (c) 0.8 hr (d) 0.9 hr