Welcome to your Ncert – class 9- science – Chapter 8 – Force and Laws of Motion 2
When a force is exerted on an object, it can change its-
An Object moving along a straight path with an accelerated motion. The correct statement about the object-
Match the following with correct response.
Which of the following is true about action and reaction forces acting on two bodies of equal masses?
If an object moves with a uniform velocity we can conclude that
A force of 10 N acts on a ball moving on a surface. The force of friction that must act between the surface of the ball and the surface so that the ball keeps on moving with constant velocity over the surface must be
Identify the incorrect statement.
Find the time for which a force of 1kgwt acts on a body of mass 1 kg moving with a uniform speed of 4m/s to stop the body.
A carpenter exerts a force of magnitude 1.5 N at right angles on the surface of a nail of mass 3 gram to drive it into a wooden plank. If the plank offers a resistive force of 0.6 N and the time of interaction of hammer and the nail 0.01 s, the depth through which the nail penetrates is
Statement A: Gravitational force is the weakest force in nature.
It is due to which of the following reasons that a scooter generally slips on an oily road?
The people in a bus are pushed backwards when the bus starts suddenly because of
Two spring balances pull each other in opposite directions. If the reading of one spring balance is 2 N, the reading shown by the second spring balance will be
Which one is correct if a bullet is fired from a rifle?
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