Motion Test - 2...

In the above question, during which interval, is the acceleration of the particle negative?

The area of a square field is one hectare. The time taken by a boy to run once around it at a speed of 10 km/hr is

A column of marching battalion extending to 250 m in length, takes one hour to march through a street at the rate of 50 paces a minute, each pace being of 75 cm. The length of the street is

A monkey ascends a grease pole 120 meters high, ascending 4 meters in the first minute and slipping down two meters in the next minute, repeating this process till he reaches the top. The time taken by it to reach the top is

A body is dropped freely into a river from a bridge at a height of 125 m. Find the time taken by the body to touch the water surface.

A body is dropped freely into a river from a bridge. It takes 5 s to touch the water surface. The velocity with which, it strikes the water surface is