A train of length 50m is moving with a constant speed of 10m/s. Calculate the time taken by the train to cross an electric pole and a bridge of length 250 m. (5s , 30s) `(AS_(1))`

A vehicle moving with a speed of 18 kmh^(-1) covers……….m in 1 s.

A ball is approaching a convex mirror of focal length 30 cm with speed 20m//s. Calculate the speed of its image when the ball was at 5 m from the mirror?

A car moves with constant speed of 10 m/s in a circular path of radius 10m. The mass of the car is 1000 kg. How much is the required centripetal force for the car?

The bob of a simple pendulum of length 1 m has mass 100g and a speed of 1.4 m/ s at the lowest point in its path. Find the tension in the string at this moment. Take g=9.8 m//sec^(2) (AS_(1))

A 70 kg man stands spring balance in a lift that is going down with a constant speed of 10 m//s. If the lift is brought to rest in 10 m by a constant raterdation, then what does the scale read during this period ? Take g = 10 m//s^(2)

A train is moving slowly on a straight track with a constant speed of 2" m s"^(-1) . A passengers in the train starts walking at a stready speed of 2" m s"^(-1) to the back of the train in the opposite direction of the motion of the train. So to an observer standing on the platform directly in front of that passenger, the velocity of the passenger appears to be

An electron is revolving around the nucleus with a constant speed of 2.2 xx 10^(8) m//s . Find the de-Broglie wavelength associated with it.