Force is defined as a 'push' or 'pull' applied to an item. For instance, if you push a chair, it will shift from its current position. Pull it now. It moves once more.

Let's look at the consequences of force using several examples.

When you kick a football, it moves at a high rate. As a result, we can say that force helps in the movement of a body.

When you put your hands against a moving ball, it stops. This explains how force helps to stop a moving body.

Force change the direction

When a force is applied to a moving object at an angle, the direction of the moving object is changed.

Example

• In badminton, when a player hits the shuttlecock back to the player on the other side, the shuttlecock's direction is changed by his force.

• When force is applied to a moving car's steering wheel to turn it, it changes its direction.

Some application of force in everyday life

• When we pedal a bicycle, it moves forward.

• A bullock cart is a cart that is drawn by a bullock.

• In a tug-of-war game, two teams pull on the rope.

• We pull on the door of our room to open it.

Force changes the shape

When you apply force to an object, it changes shape and size.

Example:

• When you press down on an inflated balloon, the force changes its shape.

• When you apply force to squeeze a plastic water bottle, it changes shape and size.

• We can make a variety of clay objects by applying force.

Friction 

When two objects touch each other, friction is generated. The force that causes moving objects to slow down and eventually stop is called friction. The greater the friction, the lesser is the speed.

For example, Walking on a rough road is difficult because there is more friction, while we slide on a smooth surface because there is less friction. 

The force of friction between the earth and our feet allows us to walk on it.

Next Generation Science Standards 

3-PS2-1. 

3-PS2-2. 

3-PS2-3. 

3-PS2-4. 

K.PS2.A (3-PS2-1); K.PS2.B (3-PS2-1); K.PS3.C (3-PS2-1); K.ETS1.A (3-PS2-4); 1.ESS1.A (3-PS2-2); 4.PS4.A (3-PS2-2); 4.ETS1.A (3- PS2-4); 5.PS2.B (3-PS2-1); MS.PS2.A (3-PS2-1),(3-PS2-2); MS.PS2.B (3-PS2-3),(3-PS2-4); MS.ESS1.B (3-PS2-1),(3-PS2-2); MS.ESS2.C (3-PS2-1)

Common Core State Standards Connections: 

ELA/Literacy – RI.3.1 (3-PS2-1),(3-PS2-3) RI.3.3 (3-PS2-3) RI.3.8 (3-PS2-3) W.3.7 (3-PS2-1),(3-PS2-2) W.3.8 (3-PS2- 1),(3-PS2-2) SL.3.3 (3-PS2-3) Mathematics – MP.2 (3-PS2-1) MP.5 (3-PS2-1) 3.MD.A.2