Some quantities are scalars and some are vectors - AQA - GCSE Physics Combined Science - Question 3 - 2019 - Paper 2
Question 3
Some quantities are scalars and some are vectors.
Which of the following quantities are scalars?
Tick (✓) two boxes.
Displacement
Distance
Force
Speed
Velocity
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Worked Solution & Example Answer:Some quantities are scalars and some are vectors - AQA - GCSE Physics Combined Science - Question 3 - 2019 - Paper 2
Step 1
Which of the following quantities are scalars?
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Answer
Tick the boxes for:
Distance
Speed
Step 2
Give the difference between a vector quantity and a scalar quantity.
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Answer
A vector quantity has both magnitude and direction, whereas a scalar quantity only has magnitude and does not have a direction.
Step 3
Give two factors that affect the momentum of each bumper car.
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Answer
Mass
Velocity
Step 4
Explain why both bumper cars stop after the crash.
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Answer
Both bumper cars come to a stop because the total momentum is zero after the collision. Before the crash, the momentum of each car was equal in magnitude and opposite in direction. During the collision, this momentum is conserved. After the collision, since both cars exert an equal and opposite force on each other for equal periods of time, they both decelerate until they stop.
