Explain the use of seat belts of cars.

(a)In 'high jump' event the athletes are made to fall on a cushioned bed. Why? (b)What is the use of seat belts in cars?

Explain the use of air bags in cars during accidents.

Why do we think it is necessary to fasten your seat belts while travelling in your vehicle.

Explain why yellow head-lights are used in cars in foggy weather.

Explain why a wide steel belt is provided over the wheels of an army tank.

Explain why a wide steel belt is provided over the wheels of an army tank.

What type of elastic fuse is used in electrical appliances like car stereos ? Explain with the help of a labelled diagram.