GCSE Physics, 4.5- Force.
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16 Terms
What is meant by ‘Scalar quantities’. [1 mark]
Quantities that have magnitude.
What is meant by ‘Vector quantities’. [1 mark]
Quantities that have magnitude and direction.
![<p>Name the force acting which is labeled by F in the figure. [1 mark]</p>](https://knowt-user-attachments.s3.amazonaws.com/2c596381-838f-406e-a70d-803578130b43.png)
Name the force acting which is labeled by F in the figure. [1 mark]
Tension.
![<p>Name the force acting which is labeled by F in the figure. [1 mark]</p>](https://knowt-user-attachments.s3.amazonaws.com/cc0ec0eb-fe05-4b9c-8723-9828ed317090.png)
Name the force acting which is labeled by F in the figure. [1 mark]
Friction.
![<p>Name the force acting which is labeled by F<sub>1</sub> in the figure. [1 mark]</p>](https://knowt-user-attachments.s3.amazonaws.com/a2735d4c-98e3-4ad6-9eaf-2cf4e72dce7d.png)
Name the force acting which is labeled by F1 in the figure. [1 mark]
Air resistance.
![<p>Name the force acting which is labeled by F<sub>2</sub> in the figure. [1 mark]</p>](https://knowt-user-attachments.s3.amazonaws.com/0523bdfc-95fe-4c1e-b490-4bb7fa7c55fb.png)
Name the force acting which is labeled by F2 in the figure. [1 mark]
Weight.
![<p>Name the force acting which is labeled by F in the figure. [1 mark]</p>](https://knowt-user-attachments.s3.amazonaws.com/740b347b-9faa-4518-8f0f-ab26084b7a6a.png)
Name the force acting which is labeled by F in the figure. [1 mark]
Normal contact force.
A man pushing a box to the left.
It create 40 N to the left.
It create 4 N to the right.
Calculate the result force. [2 marks]
36 N to the left.
What is meant by ‘elastic deformation’.[1 mark]
Elastic material return to orginal shape when force removed.
Explain why elastic material change shape when apply more than one force. [2 marks]
Force used to do work.
Elastic potential energy stored in the object.
Work is done.
What is meant by ‘moment of force’. [1 mark]
Turing effect of the force.
Gear A is connected to Gear B.
Gear B is two times larger than gear A.
If we rotate gear B one time.
Describe what will happen. [3 marks]
Gear B has two times more moment than gear A.
The force will be apply on gear A.
Gear A will rotate twice.
![<p>Person A is 60 kg.</p><p>Person B is 45 kg.</p><p>Explain why the seesaw is balance. [3 marks]</p>](https://knowt-user-attachments.s3.amazonaws.com/fbef5f5e-9aa7-48a5-bdd8-325ee05029c0.png)
Person A is 60 kg.
Person B is 45 kg.
Explain why the seesaw is balance. [3 marks]
Person B is further from pivot.
Cause Person B create more clockwise moment to seesaw.
Which is the same as person A.
A ping pong ball is thrown to the water.
A ping pong ball is mostly made of air in the inside.
Explain what will happen when ping pong ball is thrown to the surface of water. [4 marks]
Ping pong ball is less dense than water.
Ping pong ball only displace small volume of water.
Cause upthrust equal to the weight.
Float high.
A ball has the same density as water.
Explain what will happen when the ball is thrown to the surface of water. [3 marks]
The ball displace its own volume of water.
In order to upthrust equal to the weight of the ball.
Float, but the surface of the ball is at the same surface of water..
Note 
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