Newton's Second Law of Motion Worksheet
Grade 12 Physics worksheet covering Newton's Second Law of Motion with conceptual and calculation-based questions.
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Newton's Second Law of Motion
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Read each question carefully and answer to the best of your ability. Show all your work for calculation problems. Use g = 9.8 m/s² for gravitational acceleration where applicable.
1. Newton's Second Law of Motion states that:
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
For every action, there is an equal and opposite reaction.
Objects fall at the same rate regardless of their mass in a vacuum.
2. If a constant net force is applied to an object, what happens to its acceleration if the mass is doubled?
It doubles.
It halves.
It remains the same.
It quadruples.
3. The mathematical representation of Newton's Second Law is F = .
4. Force is measured in units of .
5. An object experiencing no net force will have an acceleration of .
6. A 15 kg object is subjected to a net force of 45 N. Calculate the acceleration of the object.
7. A car with a mass of 1200 kg accelerates from 0 m/s to 20 m/s in 5 seconds. What is the net force acting on the car?
8. If the net force on an object is zero, its velocity must be zero.
True
False
9. Inertia is a measure of an object's resistance to changes in its state of motion.
True
False
10. Describe how Newton's Second Law of Motion is applied in the context of rocket propulsion. Include a discussion of thrust, mass changes, and acceleration.