Motion in a Pla...

A boat sails across a river with a velocity of 10 km/hr. If resultant boat velocity is 14 km/hr, then what is the velocity of river water? 

The angular speed of the earth about its own axis is:

Rain is falling vertically with the speed of 30 m/s. A man rides a bicycle with the speed of 10 m/s in east to west direction. What is the direction in which he should hold the umbrella?

The angular speed of a wheel of radius 0.50 m moving with the speed of 20 m/s is:

In 5 seconds a body covers a distance of 50 m and in 10 seconds it covers 80 m with uniform acceleration. What is the distance traveled in 15 seconds?

The angular speed of a flywheel making 210 revolutions per minute is:

 A boat is moving with a velocity  with respect to the ground. The water in the river is moving with a velocity  with respect to the ground. What is the relative velocity of boat with respect to river?

The angular speed of the second hand of a watch is :

A monkey is running on the ground, next to a train, in the direction of the train. The speed of the monkey is 5km/h and the speed of the train is 100km/h. What is the velocity of the monkey with respect to the train?

The angular speed of a wheel of radius 0.50 m moving with the speed of 20 m/s is: