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प्रश्न
Why does it happen?
If a stationary bus suddenly speeds up, passengers are thrown in the backward direction.
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उत्तर
If a stationary bus suddenly speeds up, passengers are thrown in the backward direction. This is because initially, the whole body of a passenger inside the bus was in the state of rest. But, when the bus suddenly starts or speeds up, the lower half of the passenger's body comes into motion in the forward direction, but the upper half still remains at rest due to the inertia of rest. Hence, the passengers are thrown backwards when a stationary bus suddenly speeds up.
संबंधित प्रश्न
State whether force is a scalar or a vector quantity?
Fill in the following blank with suitable word:
When a running car stops suddenly, the passengers are jerked …………………..
Fill in the following blank with suitable word :
When a stationary car starts suddenly, the passengers are jerked …………………..
Which of the two, balanced forces or unbalanced forces, can change the shape of an object ? Give an example to illustrate your answer.
What do you understand by the terms “balanced forces” and “unbalanced forces” ? Explain with examples.
What type of forces – balanced or unbalanced – act on a rubber ball when we press it between our hands ? What effect is produced in the ball ?
Why are road accidents at high speeds very much worse than road accidents at low speeds ?
There are two types of forces X and Y. The forces belonging to type X can produce motion in a stationary object but cannot change the shape of the object. On the other hand, forces belonging to type Y cannot produce motion in a stationary object but can change the object. What is the general name of the forces as (a) X, and (b) Y?
Give one example where a force stops a moving body .
A boy of mass 50 kg standing on ground exerts a force of 500 N on the ground. The force exerted by the ground on the boy will be :
