Man A is sitting in a car moving with a speed of 54 `(km)/(hr)` observes a man B in front of the car crossing perpendicularly a road of width 15 m in three seconds. Then the velocity of man B (in `(m)/(s)`) will be:

A car moves with a speed of 80 km/hr . What is the speed of the car in metres per second?

A man is sitting in a train which is moving with a velocity of 60 km/hour. His speed with respect to the train is:

A car moves at the speed of 72 km/hr. What is the speed of the car in meters per second ?

A train 270 metres long is moving at a speed of 25 km/hr. It will cross a man coming from the opposite direction at a speed of 2 km./hr. in:

A train moves in north direction with a speed of 54 km/hr. and a monkey running on the roof of the train, against its motion with a velocity of 18km/hr. with respect to the train, then the velocity of monkey as observed by a man standing on the ground:-

A car , moving with a speed of 50 km//hr , can be stopped by brakes after at least 6m . If the same car is moving at a speed of 100 km//hr , the minimum stopping distance is

A car, moving with a speed of 50 km//hr , can be stopped by brakes after at least 6 m . If the same car is moving at a speed of 100 km//hr , the minimum stopping distance is

A train 350 m long is moving at the speed of 20 km/h. It will cross a man coming from the opposite direction at the speed of 1 km/h in ?