Calculating Wave Speed

You can calculate the speed of a wave by using the formula below.

𝑣=𝑓λ

In other words, wave speed or velocity (𝑣) is equal to frequency (𝑓) multiplied by wavelength (λ).

The unit for wave speed velocity (𝑣) is meters/second (m/s), the unit for frequency (𝑓) is hertz (hz) and the unit for wavelength (λ) is meters (m).

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NGSS.HS-PS4-1

A wave has a frequency of 5 hz and a wave length of 5 m. What is the wave speed (velocity)?

• 25 m/s

• 1 m/s

• 10 m/s

• 0 m/s

Tags

NGSS.HS-PS4-1

A wave has a frequency of 4 hz and a wave length of 3 m. What is the wave speed (velocity)?

• 25 m/s

• 1 m/s

• 7 m/s

• 12 m/s

Tags

NGSS.MS-PS4-1

A wave has a frequency of 6 hz and a wave length of 5 m. What is the wave speed (velocity)?

• 25 m/s

• 1 m/s

• 30 m/s

• 12 m/s

A wave has a frequency of 6 hz and a wave length of 6 m. What is the wave speed (velocity)?

• 25 m/s

• 36 m/s

• 30 m/s

• 12 m/s

Tags

NGSS.MS-PS4-1

A wave has a frequency of 7 hz and a wave length of 3 m. What is the wave speed (velocity)?

• 25 m/s

• 36 m/s

• 21 m/s

• 12 m/s

Tags

NGSS.HS-PS4-1

A wave has a frequency of 5 hz and a wave length of 3 m. What is the wave speed (velocity)?

• 25 m/s

• 36 m/s

• 21 m/s

• 15 m/s

A wave has a frequency of 3 hz and a wave length of 9 m. What is the wave speed (velocity)?

• 27 m/s

• 36 m/s

• 21 m/s

• 15 m/s

A wave has a frequency of 3 hz and a wave length of 8 m. What is the wave speed (velocity)?

• 27 m/s

• 36 m/s

• 24 m/s

• 15 m/s

A wave has a frequency of 2 hz and a wave length of 8 m. What is the wave speed (velocity)?

• 27 m/s

• 36 m/s

• 24 m/s

• 16 m/s