TYPES OF FORCES

what is a force?

• a push or a pull

• change in displacement

• change in direction

which of these is an effect of force?(tick mark the correct answers)

• force can start a motion

• force can stop a motion

• force can change the direction of motion

• force can change the shape of an object

• force can change the speed a moving object

The forces that need two objects to be in contact with each other are called.......

• contact forces

• non-contact forces

• electric forces

• magnetic forces

select the non contact forces.(tick mark your answers)

• gravitational force

• electric force

• magnetic force

• friction force

what kind of force is represented in the picture by

 $\overrightarrow{f}$  

• gravitation force

• electric force

• magnetic force

• friction force

When we throw anything in air it always falls down because of _____

• Friction

• Gravity

• Solid

• motion

If negative charge is developed on two objects they will__

• attract each other

• repel each other

Which force acts backwards and prevent us form slipping on a wet floor?

• Gravitational force

• Magnetic force

• Frictional force

• Electrostatic force

In what condition the magnetic poles attract each other?

• South-South

• North-North

• North-South

• All of the above

When you rub your hand heat energy is generated because of _____

• Magnetism

• Muscular force

• Electrostatic force

• Friction