Lesson 4.5.1.4
4.5.1.4 Resultant forces Quiz: AQA Physics, Unit 5
20 questions
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Lesson 4.5.1.4, Resultant forces: 20 multiple choice questions for the AQA GCSE Physics (8463), Unit 5: Forces, written with Revision Ninja.
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The 20 questions
-
What is a resultant force?
- Single equivalent force
- Maximum net force
- Total balanced force
- Frictional force sum
-
Two forces of 6 N and 4 N act on an object in the same direction. What is the resultant force?
- 0 N
- 2 N
- 24 N
- 10 N
-
Two forces act in opposite directions: 6 N to the right and 4 N to the left. What is the resultant force?
- 2 N to the right
- 0 N
- 10 N to the left
- 10 N to the right
-
What does a resultant force of zero indicate about the forces?
- Stationary
- Maximum
- Unbalanced
- Balanced
-
Forces of 15 N and 25 N both act to the left on an object. What is the resultant force?
- 40 N to the right
- 10 N to the right
- 10 N to the left
- 40 N to the left
-
Three forces act in a line: 8 N to the right, 3 N to the left and 2 N to the left. What is the resultant?
- 5 N to the right
- 13 N to the right
- 3 N to the right
- 3 N to the left
-
What is the key property of a resultant force?
- Same overall effect
- Always acts upwards
- Cancels all motion
- Always equals zero
-
What happens when a non-zero resultant force acts on an object?
- It accelerates
- Mass decreases
- It stops moving
- Velocity stays constant
-
What defines an isolated system in physics?
- Constant velocity only
- No external forces
- Zero internal mass
- No energy stores
-
What do arrows represent on a free body diagram?
- Velocities
- Forces
- Accelerations
- Energy stores
-
What is the resultant force when forces acting on an object are balanced?
- Maximum
- Equal to mass
- Negative
- Zero
-
When a single force is resolved into two perpendicular components, what is their combined effect?
- Double the single force
- Zero net effect
- Same as single force
- Half the single force
-
What can scale vector diagrams be used to determine?
- Chemical potential
- Thermal energy
- Resultant force
- Object temperature
-
(HT only) On a scale drawing, two forces at right angles are 3 cm and 4 cm long, with 1 cm representing 1 N. What is the resultant force?
- 1 N
- 5 N
- 7 N
- 12 N
-
Forces of 20 N upward and 20 N downward act on a box. What is the resultant force?
- 40 N upward
- 40 N downward
- 20 N upward
- 0 N
-
A 30 N push is opposed by 12 N of friction. What is the resultant force?
- 30 N
- 12 N
- 42 N
- 18 N
-
How do you find the resultant of two forces acting in a straight line?
- Combine opposing directions
- Always add them
- Divide them together
- Multiply both forces
-
An object has forces of 50 N to the right, 20 N to the left, 10 N to the left and 5 N to the right. What is the resultant force?
- 25 N to the right
- 25 N to the left
- 0 N
- 85 N to the right
-
A plane flies at constant velocity with a forward thrust of 80 kN and a backward drag of 80 kN. What is the resultant force?
- 0 N
- 160 kN backward
- 80 kN forward
- 160 kN forward
-
A tug-of-war team pulls 500 N to the left and the other team pulls 480 N to the right. What is the resultant force?
- 20 N to the left
- 0 N
- 980 N to the left
- 20 N to the right
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