Lesson M8.5.1
M8.5.1 Addition of forces and resultant forces Quiz: Pearson Edexcel Maths, Unit 18
20 questions
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Lesson M8.5.1, Addition of forces and resultant forces: 20 multiple choice questions for the Pearson Edexcel Maths (9MA0), Unit 18: Forces and Newton's laws, written with Revision Ninja.
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The 20 questions
-
What physical quantity is defined as a push or pull on an object?
- Acceleration
- Force
- Energy
- Velocity
-
What SI unit is used to measure forces in mechanics?
- Joules
- Kilograms
- Newtons
- Watts
-
Which type of physical quantity has both a magnitude and a direction?
- Integer
- Scalar
- Vector
- Constant
-
What single force can replace a system of multiple forces with the same effect?
- Frictional force
- Normal force
- Balanced force
- Resultant force
-
When two forces act in the exact same direction along a straight line, how do you combine them?
- Add magnitudes
- Find the average
- Subtract magnitudes
- Multiply magnitudes
-
When two forces act in opposite directions along a straight line, how do you find the resultant?
- Subtract magnitudes
- Divide magnitudes
- Square magnitudes
- Add magnitudes
-
What term describes a system of forces where the resultant force is equal to zero?
- Equilibrium
- Terminal velocity
- Unbalanced
- Acceleration
-
Which graphical method involves placing vectors head-to-tail to find their resultant?
- Sine rule only
- Pythagoras rule
- Triangle law
- Parallel theorem
-
A force of 7 N and a force of 3 N act in the same direction. What is the resultant force?
- 10 N
- 4 N
- 3.7 N
- 21 N
-
A force of 12 N acts right and 5 N acts left. What is the magnitude of the resultant?
- 17 N
- 60 N
- 7 N
- 77 N
-
Two perpendicular forces of 6 N and 8 N act on a particle. What is the resultant magnitude?
- 48 N
- 14 N
- 2 N
- 10 N
-
A force F is resolved into two perpendicular components at angle theta. What is the horizontal component?
- F sin theta
- F tan theta
- F / cos theta
- F cos theta
-
A force F is resolved into two perpendicular components at angle theta. What is the vertical component?
- F sin theta
- F tan theta
- F / sin theta
- F cos theta
-
Three coplanar forces keep a particle in equilibrium. What shape do their vectors form when drawn head-to-tail?
- Open polygon
- Right angle
- Straight line
- Closed triangle
-
If a 15 N force and a 20 N force act at right angles, what is the resultant force magnitude?
- 5 N
- 25 N
- 300 N
- 35 N
-
What rule uses sines to find unknown sides or angles in a non-right-angled force triangle?
- Cosine rule
- Scalar product
- Pythagoras theorem
- Sine rule
-
What rule uses squared lengths and a cosine term for a non-right-angled force triangle?
- Chain rule
- Product rule
- Cosine rule
- Sine rule
-
A particle has forces (3i + 4j) N and (2i - j) N acting on it. What is the resultant vector?
- 6i - 4j
- 5i + 3j
- 5i + 5j
- 1i + 5j
-
Forces (P i + 2j) N and (3i - q j) N are in equilibrium. What is the value of q?
- -2
- 0
- 3
- 2
-
A block rests on a slope. Which single force component acts directly perpendicular into the slope?
- mg tan theta
- mg
- mg cos theta
- mg sin theta
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