'Pushing a car at rest ' ,the effect of force applied is _____________
from a state of rest to a state of motion
from a state of motion to a state of rest
change in direction
towards the left
Choose the right answer
In a car ______________ energy is converted into __________ and ____________
Chemical energy into heat energy and electrical energy
Chemical energy into mechanical energy and electrical energy
Electrical energy into heat energy and mechanical energy
Chemical energy into heat energy and mechanical energy
Pick the odd one out
Water stored in a tank
The string strongly tied to a bow
A piece of rock rolling down from the top of a mountain
Compressed spring
When a body has an excess of one kind of charge, it is said to be charged. It then applies a force, called ___________ , on other charged bodies near it.
Gravitational force
Elastic force
Electrostatic force
None of these
In which of the following cases is friction a disadvantage to us ?
Running
Breaking
Writing with pencil
Parts of a machine rubbing with each other
The unit of pressure is __________ .
Newton
Hertz
Pascal
Kelvin
When a ball rolled over a smooth surface and then over another .The force exerted on it is ____________
magnetic force
frictional force
gravitational force
muscular force
