10 questionsð¬ð§English
ð Newton's Laws of Motion â GCSE
Physics · GCSE â inertia, F = ma calculations, force pairs, terminal velocity and stopping distances
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Questions
What is the SI unit of acceleration?
m/s²
N/s
m/s
kg m/s
20s
A puck slides across ice with zero resultant force acting on it. According to Newton's first law, what happens?
It stops straight away
It speeds up steadily
It gradually slows down and stops
It keeps moving at the same speed and direction
20s
A box is pushed with 10 N to the right while friction acts with 4 N to the left. What is the resultant force?
6 N to the right
6 N to the left
14 N to the right
4 N to the left
20s
A car of mass 1200 kg accelerates at 2 m/s². What resultant force acts on it?
600 N
1202 N
2400 N
24 000 N
30s
Which of these increases a driver's thinking distance?
Worn tyres
Worn brakes
An icy road surface
Being tired
20s
A book rests on a table. Its weight is the Earth pulling it down. Which force forms a Newton's third law pair with it?
The book pulling the Earth upwards
The book pushing the table downwards
The air pushing the book upwards
The table pushing the book upwards
30s
A skydiver falls at terminal velocity. Which statement about the forces on the skydiver is correct?
Air resistance is zero
Weight is greater than air resistance
Air resistance equals weight
Air resistance is greater than weight
30s
A 100 kg go-kart has a driving force of 500 N and friction of 200 N acting against it. What is its acceleration?
3 m/s²
5 m/s²
7 m/s²
0.3 m/s²
30s
A 1000 kg car brakes from 20 m/s to rest in 4 s. What is the average braking force?
500 N
80 000 N
5000 N
20 000 N
60s
A car's speed doubles. With the same braking force, how does its braking distance change?
It doubles
It becomes four times as long
It stays the same
It becomes eight times as long
30s