A man cycles up a hill whose slope is 1 in 20 with a velocity of `6.4 km h^(-1)` along the hill. The weight of the man and the cycle is 98kg. What work per minute is the man doing ? What is his horse power ?

A boy is cycling with a speed of 10 km h^(-1) on a hill of slope 1/20 . The weight of the boy and the cycle is 120 kg . Calculate the work done by the man per minute . Also find his horse power .

A man cylces up a hill whose slope is 1 in 25 at 6 kmh^(-1) . The mass of the man and the cycle is 150 kg . Find the power.

A man is riding on a cycle with velocity 7.2(km)/(hr) up a hill having a slope 1 in 20. The total mass of the man and cycle is 100kg. The power of the man is

A man cycles up a hill rising 1 metre vertically for every 50 metres along the slope. Find the power of the man, if he cycles up at the rate of 3.6 km/ hr. The weight of the cycle and man is equal to 120kg. Neglect force of friction.

A boy climbs up a hill, which rises 1 in every 25, on his bicycle. The mass of the boy and his bicycle is 120 kg. What is the power applied by the body if he is cycling at the rate of 6 km/h hour? (Assume the friction is absent and g=10m//s^(2) )

A man cycling up a smooth inclne road, climbs the road at a constant spped of 2m/s. The total mass of the man and the cycle is 150 kg and the inclination of the road with the horizonal is 30^(@) . What is the minimum horse power spend by the man? [Take g=10m//s^(2) and 1 horse power =750 watt]

What is the work to be done to increase the velocity of a car from 30 km h^(-1) to 60 km h^(-1) if the mass of the car is 1500 kg ?

A covered half of his journey at 20 km/h and rest at 60 km/h. What is the average speed of the man?

A man swims across the river which flows with a velocity of 3 km/h due east. If the velocity of man relative to water is 4 km/h due north, then what is his velocity and its direction relative to the shore of the river?

A bird is flying towards north with a velocity 40 km h^-1 and a train is moving with velocity 40 km h^-1 towards east. What is the velocity of the bird boted by a man in the train ?