Page 70 - York Global Science 6 - Physical Science
P. 70
Opener Problem
Look at the situation below.
Jad is riding his bike in a race. He is travelling at a constant speed.
He is thinking about the journey and wants to know how fast he
is moving. Jad thinks he is moving slowly because the boy on the
bike next to him does not look to be moving very fast. Jad’s father is
watching and he says that Jad is moving much faster than he thinks.
He tells Jad that if he wants to go even faster, he needs to change
the forces acting on the bike.
Think about these questions:
How can Jad find out how fast he is moving?
Why does Jad think he is moving slowly?
Why does his father say that Jad is moving faster than he thinks he
is?
What forces are acting on the bike?
Are the forces balanced or unbalanced?
What forces does Jad need to change?
How can Jad show the information about his journey to his teacher
at school?
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