Unit 2: Forces and movement
There are small forces and big forces.
Omar pulls his toys with elastic. The elastic can stretch.
Which toy needs a big pull to make it move?
the car
the rocket
the horse
Which toy needs a small pull to make it move?
the car
the rocket
the horse
This man is pulling a big rock.
Do you think the rock will move?
Lola has done an investigation to see how forces change rubber bands. Here are her results.
Lola is wrong. Can you see why?
Why is it a good idea to add one book each time?
How can you make other things speed up or slow down?
A bowling ball needs to have lots of speed to knock over the pins.
How would you make a bowling ball go fast?
These people are playing wheelchair basketball.
How can they make the wheelchairs change direction?
Paco is a school caretaker.
How does he use forces to look after the school?
- He uses forces to sweep. (top picture)
- He uses forces to mend things. (middle picture)
- He uses forces to move things. (bottom picture)
Are there other people who use forces in your school?
Do you have a cook, a cleaner or a gardener who use forces?
Do the learners and teachers use forces?
Choose some people in your school and make a list of the different ways they use forces.
Draw pictures of them or photograph them using forces.
Label the pushes and pulls used in your drawings.
Is this girl pulling or pushing? How do you know?
Here is a ball bouncing towards Kamili.
How can she stop it?
How can she make it change direction?
Vishni and Chipo are riding bicycles.
How can Chipo go faster?
How can Vishni slow down?
How can they change direction?
In this picture, the ball is moving fast across the goal from left to right.
Nico will kick the ball with a small force.
He makes a prediction.
Is his prediction correct?
