WAVE SPEED

1. WAVE SPEED

2. WAVE SPEED
 is the distance a wave travels in a given
amount of time, such as the number of
meters it travels per second.
 𝑣 = 𝑓ʎ
Where in: 𝑣 = 𝑤𝑎𝑣𝑒 𝑠𝑝𝑒𝑒𝑑
𝑓 = 𝑓𝑟𝑒𝑞𝑢𝑒𝑛𝑐𝑦
ʎ = 𝑤𝑎𝑣𝑒𝑙𝑒𝑛𝑔𝑡ℎ

3. WHEN WAVE SPEED IS MISSING

4. WHEN FREQUENCY IS MISSING

5. WHEN WAVELENGTH IS MISSING

6. SAMPLE PROBLEM #1
A wave has wavelength of 10 m and a
speed of 340 m/s. What is the frequency of the
wave?

7. SOLUTION IN SAMPLE PROBLEM #1
A. GIVEN
𝑣 = 340 m/s
𝑓 = ?
ʎ = 10 m
B. FORMULA
𝑓 = 𝑣
ʎ
C. FORMULA
𝑓 = 340 m/s
10 m
𝑓 = 34 Hz

8. SAMPLE PROBLEM #2
A wave has a frequency of 5 Hz and a
speed of 25 m/s. What is the wavelength of the
wave?

9. SOLUTION IN SAMPLE PROBLEM #2
A. GIVEN
𝑣 = 25 m/s
𝑓 = 5 Hz
ʎ = ?
B. FORMULA
ʎ = 𝑣
𝑓
C. FORMULA
ʎ = 25 m/s
5 Hz
ʎ = 5 m

10. SAMPLE PROBLEM #3
A wave has a frequency of 50 Hz and a
wavelength of 10 m. What is the speed of the
wave?

11. SOLUTION IN SAMPLE PROBLEM #3
A. GIVEN
𝑣 = ?
𝑓 = 50 Hz
ʎ = 10 m
B. FORMULA
𝑣 = 𝑓ʎ
C. FORMULA
𝑣 = (50 Hz) (10 m)
𝑣 = 500 m/s

12. ONLINE ACTIVITY #
1. A wave has a frequency of 540 Hz and is travelling at
340𝑚⁄𝑠 . What is its wavelength?
2. A wave has a frequency of 900 Hz and a wavelength of
200m. At what speed is this wave travelling?
3. A wave travelling at 230 𝑚⁄𝑠 has a wavelength of 2.1
meters. What is the frequency of this wave?
4. A wave with a frequency of 14 Hz has a wavelength of
3 meters. At what speed will this wave travel?