Practice - Assessments and Reflections
Practice Questions
Test your understanding with targeted questions
Describe what a distance-time graph shows.
💡 Hint: Think about the distance during each time interval.
What is the first law of motion?
💡 Hint: Consider what happens to an object with no forces acting on it.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does a flat segment on a velocity-time graph indicate?
💡 Hint: Consider what happens when the speed remains the same.
True or False: Crumple zones are designed to concentrate impact forces onto passengers.
💡 Hint: Think about the purpose of crumple zones.
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Challenge Problems
Push your limits with advanced challenges
You have a vehicle with a crumple zone that extends the collision time effectively. If the average force when impacting without crumple zones is 30,000 N, what could be the average force on passengers if crumple zones reduce the impact duration by half?
💡 Hint: Use the impulse-momentum principle to relate force, time, and momentum change.
During your design project, you tested three different materials for trolley wheels and recorded different friction coefficients. Describe how you plan to statistically analyze the effectiveness of each material.
💡 Hint: Consider how to compare means effectively.
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Reference links
Supplementary resources to enhance your learning experience.