2.5 - Points to ponder
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Practice Questions
Test your understanding with targeted questions
What does it mean to choose a specific origin for motion analysis?
💡 Hint: Think about how direction is determined from this starting point.
Explain the difference between acceleration and velocity.
💡 Hint: Consider what happens to speed over time.
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Interactive Quizzes
Quick quizzes to reinforce your learning
In kinematics, the choice of origin affects which of the following?
💡 Hint: Think about how you define positive and negative positions.
Negative acceleration always results in a decrease in speed.
💡 Hint: Consider scenarios with different defined positive directions.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A car moving in the negative direction increases its velocity while the acceleration is negative. Explain what this implies in terms of motion.
💡 Hint: Think about what happens to speed when you apply brakes in a car.
A projectile is thrown upwards with a positive velocity but has a negative acceleration. Calculate its peak height given the initial velocity of 20 m/s and acceleration of -9.8 m/s².
💡 Hint: Remember the kinematic equation for uniformly accelerated motion.
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