Newton's Law of Motion Quiz

1. When an object is at rest on a surface - what can you say about the forces on it?

• they are all equal

• they are unbalanced

• all the forces cancel out so the net force is zero

• all the forces are in the same direction

2. Force is considered to be a vector quantity. Which is a correct statement about a vector quantity?

• Has direction only

• Has neither magnitude nor direction

• Has direction and magnitude

• Has magnitude only

3. The …….. forces will have no effect on the movement of an object

• Unbalanced

• Balanced

• Opposite

• Identical

4. When an object is not moving what effect will balanced forces have on the object? 

• it will start moving

• it will speed up

• it will slow down

• it will not move

5. When an object is moving - what effect will a balanced force have on the object?

• it will start moving faster

• it will speed up to a steady speed

• it will slow down

• it will not move

6. Describe the motion of a rest object if an unbalanced force acts on it

• no change

• it will accelerate

• It will decelerate

• it will accelerate or decelerate depending upon the forces

7. Describe the motion of a moving object if an unbalanced force acts on it

• no change

• it will accelerate

• It will decelerate

• it will accelerate or decelerate depending upon the forces

8. How will the mass of  the object affect the way it accelerates?

• no effect

• more massive objects are easier to accelerate and harder to decelerate

• more massive objects are harder to accelerate and harder to decelerate

• more massive objects are easier to accelerate and easier to decelerate

9. How will the force act on the object affect the way it accelerates?

• no effect

• The bigger force the bigger acceleration

• The bigger force the smaller acceleration

• The smaller force the bigger acceleration

10. look at the picture, What is the resultant force?

• 40 N to the Left

• 40 N to the Right

• 20 N to the Right

• 0 N