A 150 m long train passes a tree in 3s. Calculate the time taken by train to cross a bridge 300m long.
The motion of a ball rolling down from inclined plane is:
A car is moving with a velocity of 50 m/s. The driver of the car observes that there is a cow in the path at a distance of 160 m from the car and he applies brakes which produces a retardation of 10 meter per second square. The time taken by the man in thinking for applying brakes is 0.5 seconds. When car stops it doesn’t colloid with cow. Find the separation between car and cow.