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Q1. A 10 kg box is at rest on a frictionless surface. A force of 30 N is applied. What is the final velocity after 3 seconds? (2023)
Solution:
Acceleration = F/m = 30 N / 10 kg = 3 m/s². Final velocity = initial velocity + (acceleration × time) = 0 + (3 m/s² × 3 s) = 9 m/s.
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Q2. If a force of 50 N is applied to a 25 kg object, what is the acceleration of the object? (2022)
Solution:
Using F = ma, a = F/m = 50 N / 25 kg = 2 m/s².
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Q3. A 3 kg object is subjected to a net force of 12 N. What is the acceleration of the object? (2022)
Solution:
Using F = ma, a = F/m = 12 N / 3 kg = 4 m/s².
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Q4. A force of 50 N is applied to a 25 kg object. What is the acceleration of the object? (2019)
Solution:
Using F = ma, a = F/m = 50 N / 25 kg = 2 m/s².
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Q5. A 10 kg object is at rest. A force of 30 N is applied to it. What will be its velocity after 3 seconds? (2023)
Solution:
First, find acceleration: a = F/m = 30 N / 10 kg = 3 m/s². Then, using v = u + at, v = 0 + 3 m/s² × 3 s = 9 m/s.
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Q6. A force of 100 N is applied to a 50 kg object. What is the acceleration of the object? (2022)
Solution:
Acceleration = Force / Mass = 100 N / 50 kg = 2 m/s².
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Q7. An object of mass 8 kg is acted upon by a net force of 32 N. What is the acceleration of the object? (2019)
Solution:
Acceleration = Net force / Mass = 32 N / 8 kg = 4 m/s².
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Q8. A 20 kg object is acted upon by a net force of 80 N. What is the acceleration of the object? (2023)
Solution:
Acceleration = Net force / Mass = 80 N / 20 kg = 4 m/s².
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Q9. A 25 kg object is pulled with a force of 100 N. If the frictional force is 25 N, what is the acceleration of the object? (2023)
Solution:
Net force = 100 N - 25 N = 75 N. Acceleration = Net force / Mass = 75 N / 25 kg = 3 m/s².
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Q10. If a 4 kg object is moving with a velocity of 5 m/s, what is the momentum of the object? (2020)
Solution:
Momentum = mass × velocity = 4 kg × 5 m/s = 20 kg m/s.
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