1. The Kinematics Equations
1.5
The Kinematics Equations

2. slope =
= acceleration (m/s2)
= change in velocity (m/s)
= change in time (s)

3. = initial velocity (m/s)
= final velocity (m/s)
= displacement (m)
t = time (s)

5. Equation X

6. Examples
1) A car moving at a velocity of 50.0 km/h [east] accelerates for 5.45 s at a rate of 2.00 m/s2 [east]. What will be the car’s final velocity, in km/h?
89.2 km/h [east]
2) A bear accelerates from rest to a velocity of 15 m/s [N]. If the displacement of the bear was 50 m [N], how long did it accelerate for?
6.7 s
3) A truck traveling at 80.0 km/h applies the brakes for 10.4 s. If the acceleration due to the brakes is m/s2, how far did the truck travel during this time?
179 m

7. Examples
4) A car in motion takes 7.4 s to accelerate to 100 km/h [E]. If during this time it travels 240 m [E], what is the car’s acceleration?
1.3 m/s2 [W]
5) What is the magnitude of a truck’s acceleration if it can stop from a speed of 80.0 km/h in a distance of 23.7 m?
10.4 m/s2

8. Homework: read pages 46 – 53 Practice Problems pgs. 47, 48, 50, 51, 52
1.5 Check and Reflect
pg. 53 #’s 1 – 14