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Newton's Laws Worksheet
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Newton's Laws Worksheet
📚 Part 1: Multiple Choice (Choose the best answer)
1. Which statement best describes Newton’s First Law?
An object accelerates when the forces are balanced.
An object remains at rest or in uniform motion unless acted on by a resultant force.
For every action there is a larger reaction.
Force equals mass multiplied by velocity.
2. Which formula expresses Newton’s Second Law?
F = mv
F = ma
F = m/g
F = m + a
3. Which is a correct example of Newton’s Third Law?
A car slows down because its tyres have low friction.
A rocket accelerates forward because gases are pushed out backwards with equal and opposite force.
A heavier trolley always accelerates more than a lighter one under the same force.
An object moves at constant speed when a single force acts on it.
4. A puck on a frictionless surface has no resultant force. What happens?
It immediately comes to rest.
It moves with constant velocity (same speed and direction).
Its mass changes until forces balance.
It accelerates in the direction of motion.
✏️ Part 2: Short Answers, Calculations & Applications
5. In your own words, write Newton’s Second Law (use everyday language).
6. A toy car of mass 0.50 kg is pulled with a horizontal resultant force of 2.0 N. Calculate the acceleration. Show your working.
7. A car of mass 1 200 kg accelerates at 2.0 m/s². Calculate the resultant force needed. Give your answer in newtons (N) and show working.
8. Describe a real-life example that illustrates Newton’s Third Law. Identify the action and the reaction forces in your example.
9. Match each scenario to the Newton’s law that best explains it. Draw lines to connect.
A. A stationary book stays on a table until someone pushes it.
B. A sprinter pushes down and back on the track and moves forward.
C. Adding mass to a trolley reduces its acceleration when the same push is used.
D. A spacecraft coasts through space with near-constant velocity when engines are off.
1. Newton’s First Law
2. Newton’s Second Law
3. Newton’s Third Law
10. Practical sketch: Draw a free-body diagram for a skydiver descending at terminal velocity. Label the forces and state why acceleration is zero.
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