What is the average friction force when a person has a usual 1 km walk?

Find the average frictional force needed to stop a a car weighing 500 kg in a distance of 25 m (the initial speed is 72 km/h.)

What is the SI unit of force of friction ?

The frictional force acting on 1 kg block is

Travelling 900 km by rail costs Rs 280. What would be the fare for a journey of 360 km when a person travels by the same class?

In the above example what is the average force if surface is perpectly reflecting?

When a person leaves his home for sightseeing by his car, the meter reads 12352 km. When he returns home after two hours the reading is 12416 km. A. What is the average speed of the car during this period? B. What is the average velocity?

A block weighing 20N rests on a horizontal surface . The coefficient of static friction between the block and surface is 0.4 and the coeffiecient of kinetic frictioni 0.20 a.How much is the friction force excerted on the block? b. How much will the friction force be if a horizontal force of 5 N is exerted on the block? c. What is the minimum force that will start the block in motion ? d. What is the minimum force that will keep the block in motion once is has been started ? e. If the horizontal force is 10 N what is the friction force?

A wooden block of 100 kg is about to be pushed on a floor of coefficient of friction 0.4. What is the magnitude of the force of friction on the wooden block when it is just pushed ?

A farmer has to go 500 m due north, 400 m due east and 200 m due south to reach his field. If he takes 20 min to reach the field. (a) What distance he has to walk to reach the field ? (b) What is the displacement from his house to the field ? (c) What is the average speed of farmer during the walk ? (d) What is the average velocity of farmer during the walk ?

A car covers a distance of 89.1 km in 2.2 hours. What is the average distance covered by the car in 1 hour?