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2 cards from this section. Quick, good the night before a test.
What does it mean to choose a specific origin for motion analysis?
Think about how direction is determined from this starting point.
Explain the difference between acceleration and velocity.
Consider what happens to speed over time.
In kinematics, the choice of origin affects which of the following?
Think about how you define positive and negative positions.
Negative acceleration always results in a decrease in speed.
Consider scenarios with different defined positive directions.
A car moving in the negative direction increases its velocity while the acceleration is negative. Explain what this implies in terms of motion.
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.
Remember the kinematic equation for uniformly accelerated motion.
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