1. Speed Calculations

2. Speed Calculations
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
Given
Given F
Formula
Work
Answer

3. Speed Calculations
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
Given
Given F
Formula
Work
Answer
Look for what is given.

4. Speed Calculations
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
Given
Given F
Formula
Work
Answer
d = 10 km

5. Speed Calculations
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
Given
Given F
Formula
Work
Answer
d = 10 km
t = 40 min

6. Speed Calculations
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
Given
Given F
Formula
Work
Answer
d = 10 km
t = 40 min
What does the problem ask for?

7. Speed Calculations
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
Given
Given F
Formula
Work
Answer
d = 10 km
t = 40 min

8. Speed Calculations
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
Given
Given F
Formula
Work
Answer
d = 10 km
t = 40 min
What formula will you use to find the answer?

9. Speed Calculations
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
Given
Given F
Formula
Work
Answer
d = 10 km
t = 40 min
s = d/t

10. Speed Calculations
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
Given
Given F
Formula
Work
Answer
d = 10 km
t = 40 min
s = d/t
Now, plug in the given values into the formula.

11. Speed Calculations
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
Given
Given F
Formula
Work
Answer
d = 10 km
t = 40 min
s = d/t
s = 10 km / 40 min.

12. Speed Calculations
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
Given
Given F
Formula
Work
Answer
d = 10 km
t = 40 min
s = d/t
s = 10 km / 40 min.
And solve!

13. Speed Calculations
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
Given
Given F
Formula
Work
Answer
d = 10 km
t = 40 min
s = d/t
s = 10 km / 40 min.
s = 0.25 km/min * 60 min. / hr =

14. Speed Calculations
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
Given
Given F
Formula
Work
Answer
d = 10 km
t = 40 min
s = d/t
s = 10 km / 40 min.
s = 0.25 km/min * 60 min. / hr =
Write the answer in the answer section.
Do not forget the units!

15. Speed Calculations
A cross-country runner runs 10 km in 40 minutes. What is his average speed?
Given
Given F
Formula
Work
Answer
d = 10 km
t = 40 min
s = d/t
s = 10 km / 40 min.
s = 0.25 km/min * 60 min. / hr =
15 km/hr

16. Acceleration Calculations
Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs.
Given
Given F
Formula
Work
Answer

17. Acceleration Calculations
Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs.
Given
Given F
Formula
Work
Answer
Look for what is given.

18. Acceleration Calculations
Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs.
Given
Given F
Formula
Work
Answer
vi=48 km/hr

19. Acceleration Calculations
Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs.
Given
Given F
Formula
Work
Answer
vi=48 km/hr
vf= 75 km/hr

20. Acceleration Calculations
Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs.
Given
Given F
Formula
Work
Answer
vi=48 km/hr
vf= 75 km/hr
t = 27 hrs

21. Acceleration Calculations
Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs.
Given
Given F
Formula
Work
Answer
vi=48 km/hr
vf= 75 km/hr
t = 27 hrs
What does the problem ask for?

22. Acceleration Calculations
Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs.
Given
Given F
Formula
Work
Answer
vi=48 km/hr
vf= 75 km/hr
t = 27 hrs

23. Acceleration Calculations
Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs.
Given
Given F
Formula
Work
Answer
vi=48 km/hr
vf= 75 km/hr
t = 27 hrs
What formula is required to find the answer?

24. Acceleration Calculations
Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs.
Given
Given F
Formula
Work
Answer
vi=48 km/hr
vf= 75 km/hr
t = 27 hrs
a=(vf-vi)/t

25. Acceleration Calculations
Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs.
Given
Given F
Formula
Work
Answer
vi=48 km/hr
vf= 75 km/hr
t = 27 hrs
a=(vf-vi)/t
Now, plug in the values and solve!

26. Acceleration Calculations
Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs.
Given
Given F
Formula
Work
Answer
vi=48 km/hr
vf= 75 km/hr
t = 27 hrs
a=(vf-vi)/t
a=(75 km/hr – 48 km/hr) / 27 hrs

27. Acceleration Calculations
Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs.
Given
Given F
Formula
Work
Answer
vi=48 km/hr
vf= 75 km/hr
t = 27 hrs
a=(vf-vi)/t
a=(75 km/hr – 48 km/hr) / 27 hrs
a= 27km/hr / 27 hr = 1 km/hr2

28. Acceleration Calculations
Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs.
Given
Given F
Formula
Work
Answer
vi=48 km/hr
vf= 75 km/hr
t = 27 hrs
a=(vf-vi)/t
a=(75 km/hr – 48 km/hr) / 27 hrs
a= 27km/hr / 27 hr = 1 km/hr2
Write the answer in the answer section.
Do not forget the units!

29. Acceleration Calculations
Calculate the acceleration of an object that changes speed from 48 km/hr to a speed of 75 km/hr in 27 hrs.
Given
Given F
Formula
Work
Answer
vi=48 km/hr
vf= 75 km/hr
t = 27 hrs
a=(vf-vi)/t
a=(75 km/hr – 48 km/hr) / 27 hrs
a= 27km/hr / 27 hr = 1 km/hr2
a=1 km/hr2