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3 cards from this section. Quick, good the night before a test.
What is the final velocity of an object that starts from rest and accelerates at 4 m/s² for 3 seconds?
Use the equation v = u + at. Remember u = 0.
If an object has an initial velocity of 5 m/s and accelerates at 2 m/s² for 2 seconds, what is its final velocity?
Calculate using v = u + at.
What does the equation v = u + at describe?
Remember what v stands for.
True or False: The displacement can be calculated without knowing time if using the equation v² = u² + 2as.
Think about the relationship between the variables in that equation.
An object starts with a velocity of 15 m/s and accelerates at 3 m/s² for 10 seconds. Calculate the final velocity and displacement.
Use the equations separately for v and s.
A car moving at 20 m/s is brought to a stop in 5 seconds with uniform negative acceleration. Find the acceleration and the distance traveled during this time.
The first equation will provide acceleration; then use it in the displacement equation.
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