Force & Momentum (OCR GCSE Physics A (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What does a resultant force acting on an object cause to change?
What does a resultant force acting on an object cause to change?
Its momentum
Which equation expresses force as a change in momentum?
Which equation expresses force as a change in momentum?
What is the unit of force?
What is the unit of force?
Newtons (N)
What is the unit of change in momentum?
What is the unit of change in momentum?
kg m/s
What does a faster rate of change of momentum mean?
What does a faster rate of change of momentum mean?
A bigger force
If an object changes velocity very quickly, what happens to the force on it?
If an object changes velocity very quickly, what happens to the force on it?
The force is larger
What is the purpose of vehicle safety measures?
What is the purpose of vehicle safety measures?
Reduce rate of change of momentum
How do seat belts reduce force on passengers during a crash?
How do seat belts reduce force on passengers during a crash?
They stretch, increasing stopping time
What is the purpose of airbags in a crash?
What is the purpose of airbags in a crash?
Slow the passenger down
How do gymnasium crash mats reduce force on a gymnast?
How do gymnasium crash mats reduce force on a gymnast?
Increase time taken to fall
Why are cushioned surfaces used on playgrounds?
Why are cushioned surfaces used on playgrounds?
Decrease rate of momentum change
How do cycle helmets reduce force on the head?
How do cycle helmets reduce force on the head?
Crushable foam increases stopping time