Estimating Decelerating Forces (OCR GCSE Physics A, Combined (Gateway Science Suite)): Quizzes
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10 questions from this quiz
What is deceleration?
What is deceleration?
A reduction in speed
What often causes a decelerating force when a car slows down?
What often causes a decelerating force when a car slows down?
Friction or air resistance
What is the formula for estimating decelerating force?
What is the formula for estimating decelerating force?
What is the unit for decelerating force in the formula?
What is the unit for decelerating force in the formula?
Newtons
In the formula , what unit is measured in?
In the formula , what unit is measured in?
Metres per second
A car of mass 1,200 kg slows from 30 m/s to 0 m/s in 5 s. What is the decelerating force?
A car of mass 1,200 kg slows from 30 m/s to 0 m/s in 5 s. What is the decelerating force?
7,200 N
How does mass affect the force needed to decelerate a vehicle in the same time?
How does mass affect the force needed to decelerate a vehicle in the same time?
Heavier vehicles need more force
How does speed affect the decelerating force required to stop in a given time?
How does speed affect the decelerating force required to stop in a given time?
Faster vehicles need greater force
Why are slippery surfaces like ice harder to decelerate on?
Why are slippery surfaces like ice harder to decelerate on?
They reduce available friction
What plays a crucial role in generating the necessary decelerating force?
What plays a crucial role in generating the necessary decelerating force?
Friction between tyres and road