It has deformed permanently and will not go back to how it was before.
It is completely broken because it is past its breaking point.
Look at the picture. The angry boy is applying a force to the chair.
Is the chair deforming?
No.
Yes.
Maybe; it depends on the size of the force.
Question 12
12.
Question 13
13.
Question 14
14.
Question 15
15.
Question 16
16.
Explain your answer to number 15. Why would that happen to the forces?
The forces would ______________ because...
Question 17
17.
Draw a free body diagram for the ball.
-You only need to draw 1 force.
-Write where the force is coming from.
Question 18
18.
Question 19
19.
How could you increase the kinetic energy of the ball?
You could increase the kinetic energy of the ball by...
Question 20
20.
What is true about the forces in the collision between the soccer player's head and the ball?
The force on the head is equal to the force on the ball.
The force on the head is bigger than the force on the ball.
The force on the head is smaller than the force on the ball.
What happens to the ball when the player's head applies a force to it?
The ball breaks.
The ball deforms.
The ball gets bigger.
The ball is happy. 🙃
If the speed of the ball increased, what would happen to the forces in the collision?
They would decrease.
They would stay the same.
They would increase.
Now, the player got hit by a tennis ball, not a soccer ball. (But the speed of the tennis ball is the same as the soccer ball.) What would happen to the forces in the collision?
They would decrease.
They would stay the same.
They would increase.
Before the collision, which objects had kinetic energy?
The ball.
The head.
The ball and the head.
Look at the graphs. Graph 1 shows how mass affects kinetic energy. Graph 2 shows how speed affects kinetic energy.
Graph 1
Graph 2
If you wanted to increase the kinetic energy of the ball more, what should you do?
Increase the mass.
Increase the speed.
It does not matter; mass and speed have equal effects on kinetic energy.
