1. Print Tutorial Click Screen for Next Step Return to Main MenuMenu Solving Kinematic Problems Using Equation I v f = v i + at Section 1

2. Print Tutorial Click Screen for Next Step Return to Main MenuMenu A car is traveling at 30.0 m/s and observes a stop sign. The car can safely slow down at a rate of -3.5 m/s 2. If the car comes to a complete stop, how much time did it take to stop? List the variables and their values. v i = 30.0 m/s v f = 0 a = -3.5 m/s 2 t = ?

3. Print Tutorial Click Screen for Next Step Return to Main MenuMenu What variable are you not given and you are not trying to find? d Use equation I since distance is not in the equation. v f = v i + at

4. Print Tutorial Click Screen for Next Step Return to Main MenuMenu Substitute the known values. 0 = 30.0 m/s + (-3.5 m/s 2 )(t) Solve for the unknown variable. t = 8.57 sec

5. Print Tutorial Click Screen for Next Step Return to Main MenuMenu Section 2 A car starts at rest and accelerates at 4.0 m/s 2. How fast is it going after 90.0 sec? a) 22.5 m/s b) 0.44 m/s c) 360 m/s d) 86 m/s

6. Print Tutorial Click Screen for Next Step Return to Main MenuMenu List the variables and their values. v i = v f = a = t =

7. Print Tutorial Click Screen for Next Step Return to Main MenuMenu Which equation should you use? v f = v i + at Why? You are not given d and are not trying to find d.

8. Print Tutorial Click Screen for Next Step Return to Main MenuMenu Solve for the unknown variable. If you picked a) try again. If you picked b) try again. If you picked d) try again. If you picked c) correct.

9. Print Tutorial Click Screen for Next Step Return to Main MenuMenu Section 3 Now you will solve problems by yourself and see if you get the correct answer.

10. Print Tutorial Click Screen for Next Step Return to Main MenuMenu A car is traveling at 30.0 m/s and it takes 55.0 sec to reach 60.0 m/s. What is the acceleration of the car? The answer is 0.54 m/s 2

11. Print Tutorial Click Screen for Next Step Return to Main MenuMenu A car is accelerating at 8.0 m/s 2 and reaches a velocity of 100.0 m/s in 10.0 sec. What was its initial velocity? The answer is 1.25 m/s.