A force is a push or a pull.


A force can:

— start motion

— stop motion

— speed up motion

— slow down motion

— change the direction of motion

— change the shape of an object

— have no visible effect



1. What happens

a.    when a tennis ball is hit with a racquet

b.    when the heart beats

c.    when you write on paper with a pencil

d.    when you stretch a rubber band

e.    when you drop a tennis ball

f.    when a plastic ruler that is rubbed with a wool cloth is brought close to a thin stream of tap water

2. Write the names of three non-contact forces.

3. Most of the time there is more than one force acting on an object. True or False.

4. What are the different forces acting on a coin that is sliding/rolling  on the surface of a table?  Draw a diagram to show the direction of forces using arrows.

5. Why doesn’t  gravity make you fall through the floor?







This entry was posted in scientia 7 and tagged , , , , , , , . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s