The wheels of a car are of diameter 80 cm each. How many complete revolutions does each wheel make in 10 minutes when the car is travelling at a speed of 66 km per hour ?

The wheels of a car are diameter 70 cm each. How many complete revolutions does each wheel make in oneminute when the car is travelling at the speed of 52.8 km per hour.

The wheel of a carriage is 91 cm in diameter and makes 5 revolutions per second. How fast is the carriage running ?

The wheel of a railway carriage is 40cm in diameter and makes 6 revolutions in a second, how fast is the train going?

A car takes 2 hours to reach a destination by travelling at the speed of 60 km/h. How long will it take when the car travels at the speed of 80 km/h?

The wheel of a railway carriage is 40 cm in diameter and makes 7 revolutions in a second, find the speed of train.

A car travels 4 km in 3 minutes. Find the speed of car in cms^-1

The two rails of a railway track, insulated from each other and the ground, are connected to a milli voltmeter. What is the reading of the milli voltmeter when a train travels at a speed of 180 km//hours along the track, given that the vertical components of earth's magnitic field is 0.2xx10^(_4) weber//m^(2) & the rails are separated by 1 meter?

Two cars start together in the same direction at the same place.The first goes with the speed of 10km/hr. The second goes at the speed of 8 km/hr in the first hour and increases the speed by 1/2 km each succeeding hour. After how many hours will the second car overtake the first if both cars go non-stop ?

In each of the following problems, clearly state what the relevant and irrelevant factors are while going through Steps 1, 2 and 4 given in this chapter :- Suppose a car starts from a place A and travels at a speed of 40 km/h towards another place B. At the same instance, another car starts from B and travels towards A at a speed of 30 km/h. If the distance between A and B is 100 km, after how much time will the cars meet?