Practice Newton’s First Law: Inertia - 2.2 | Forces & Motion | IB IMYP Grade 8 Physics
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2.2 - Newton’s First Law: Inertia

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is inertia?

💡 Hint: Think about what happens when you stop suddenly in a vehicle.

Question 2

Easy

If a car is moving at a constant speed, what can we say about the net force acting on it?

💡 Hint: Consider Newton's First Law.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What does Newton's First Law state?

  • A body at rest will stay at rest until acted upon by a force.
  • A body in motion will stay in motion at constant speed unless a force acts.
  • Both A and B.

💡 Hint: Consider both scenarios of an object's motion.

Question 2

True or False: An object's inertia depends on its mass.

  • True
  • False

💡 Hint: How does mass relate to resistance to force?

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Challenge Problems

Push your limits with challenges.

Question 1

A cyclist riding at 15 m/s suddenly applies brakes producing a net force of -600 N. If the mass of the cyclist and bike is 75 kg, calculate the time taken to come to a stop.

💡 Hint: Use the acceleration and initial speed to find the stopping time.

Question 2

If a 450 kg car is moving with constant velocity and experiences a 900 N force braking it, determine its acceleration. Then, find stopping distance from 30 m/s to 0.

💡 Hint: Solve for acceleration first and then apply kinematics for distance.

Challenge and get performance evaluation