MEDIUM
9th CBSE
IMPORTANT
Earn 100

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 shape of the object. What is the general name of the forces such as X and Y?

Important Questions on Force and Laws of Motion

EASY
9th CBSE
IMPORTANT

Which physical quantity corresponds to the rate of change of momentum?

EASY
9th CBSE
IMPORTANT

State the relation between the momentum of a body and force acting on it.

EASY
9th CBSE
IMPORTANT

What is the relationship between force and acceleration?

MEDIUM
9th CBSE
IMPORTANT
If the mass of a body and the force acting on it are both doubled, what happens to the acceleration?
EASY
9th CBSE
IMPORTANT
Name the physical quantity whose unit is 'newton'.
MEDIUM
9th CBSE
IMPORTANT
Which physical principle is involved in the working of a jet aeroplane?