1. Using Kinematic Equations

2. Warm-up
How do you determine the instantaneous velocity of an object from a graph of position vs. time?
Reminders
Unit 1 Test Corrections Due Friday at lunch.
Unit 2 Quiz Wednesday(10/24); Unit 2 Test Wednesday(10/31)

3. Check your answers (Using Kinematic Equations):
a= -4 m/s²
t= 2.0 s
∆x= 32m

4. Question 1
A ball rolls across a 50m surface for 5 seconds before coming to rest. Calculate the acceleration of the ball.

5. Question 2
A car increases its velocity from rest at 2.5 m/s² and drives 5.0m. Calculate how long it took.

6. Question 3
A car going 12 m/s speeds up at a rate of 4 m/s². Calculate how far the car has gon when it is going 20m/s.

7. Question 4
A ball is dropped from a cliff 50m above the ground. Calculate how long it takes to hit the ground. (gravitational acceleration=9.8 m/s²)

8. Question 5
A ball is thrown straight down from a building at 10.0 m/s. If it takes 4 seconds to hit the ground, calculate the height of the building it is thrown from.