Which one of the following is something that can bring about a change in the state of rest or of motion of a body or a change in its shape or size?
Pressure
Force
Density
Surface tension
When you walk or run, you push the ground
Forwards with your feet
Upwards with your feet
Downwards with your feet
Backwards with your feet
To roll forward,there should be a friction between the wheels of a vehicle and
Engine
Air
Surface of the road
None of these
If you are cycling, and wind pushes you from behind, your speed will
Increase
Decrease
No change
Can not be predicted
Solids always exert pressure
Upwards
Downwards
At the centre
Can’t be predicted
The force exerted by a liquid on a body immersed fully or partially in it is the
Gravitational force
Magnetic force
Thrust
Buoyant force
Density of an object
Is different in different place
Is greater in liquids
Is a constant
Is less in liquids
The force acting normally on a surface is called
Gravity
A liquid gives force of 100 N over an area of 2 m2. What is the pressure?
50 N / m2
100 N / m2
25 N / m2
150 N / m2
The force that opposes the motion or tendency of motion between two surface in contact is called
Tension
Force of friction