Balanced and Unbalanced forces

Front

All objects around us can move by the effect of:

• pushing force only
• pulling force only
• pushing and pulling forces
• sound and light energies

Back

pushing and pulling forces

Front

When an object is in motion, this means that its .................... changes.

Back

position

Front

A ball may move away from the foot of a football player by the effect of:
- pushing force only
- pulling force only
- pushing and pulling forces
- sound energy only

Back

pushing force only

Front

When you sit on a chair, the force of gravity is ................ and holding you on the chair.

Back

pulling you downward

Front

What causes an object to move?

Back

Unbalanced forces

Front

In the tug-of-war game, two teams ___________.

Back

pull the rope in the opposite directions

Front

Which of the following is an example of unbalanced forces?

• Two children push the box with the same force in opposite directions.
• Two children play on a seesaw, that moves up and down
• Two children play on a seesaw, without its moving up and down
• Two teams play the tug-of-war game while the rope doesn't move.

Back

Two children play on a seesaw, that moves up and down

Front

Examples of motion: a running person, a ball travelling through the air, a flying bird, a sleeping dog (except one).

Back

a sleeping dog

Front

You can see the movement of the following objects, except: a flying airplane, a running horse, sea waves, the planet Earth.

Back

the planet Earth

Front

Two equal forces act at the same time on a stooping object but in opposite directions. Which sentence describes the object's state?

Back

The object stays in its place without moving