2.2 - Newton’s First Law: Inertia
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Practice Questions
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What is inertia?
💡 Hint: Think about what happens when you stop suddenly in a vehicle.
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.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does Newton's First Law state?
💡 Hint: Consider both scenarios of an object's motion.
True or False: An object's inertia depends on its mass.
💡 Hint: How does mass relate to resistance to force?
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Challenge Problems
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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.
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.
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