Advertisements
Advertisements
प्रश्न
A car is moving on a level road. If the driver turns off the engine of the car, the car’s speed decreases gradually and ultimately it comes to a stop. A student says that two forces act on the car which bring it to a stop. What could these forces be ? Which of these two forces contributes more to slow down and stop the car ?
Advertisements
उत्तर
These forces could be the frictional force and air resistance.
Force of friction contributes more towards the slowing down and stopping the car.
APPEARS IN
संबंधित प्रश्न
What is the usual name of the forces which cannot produce motion in a body but only change its shape ?
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 …………………..
What do you understand by the terms “balanced forces” and “unbalanced forces” ? Explain with examples.
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?
What is the relationship between force and acceleration ?
Give one example where a force stops a moving body .
When a toothpaste tube is squeezed, its shape changes. The force responsible for this is an example of :
A fielder pulls his hands backwards after catching the cricket ball. This enables the fielder to :
