#### The speed of sound is measured to be 342 m/s on a certain day. What is this in km/h?

**Solution:**

We know that **1 km=1000** m and **1 hr=3600 sec**.

Convert 342 m/s.

☚

Therefore, the speed of sound in km/hr is 1231.2 km/hr.

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# Tag: km/hr to m/s

#### The speed of sound is measured to be 342 m/s on a certain day. What is this in km/h?

**Solution:**

#### A car is traveling at a speed of 33 m/s .

(a) What is its speed in kilometers per hour?

(b) Is it exceeding the 90 km/h speed limit?

**Solution:**

### Part a

### Part b

#### The speed limit on some interstate highways is roughly 100 km/h.

(a) What is this in meters per second?

(b) How many miles per hour is this?

**Solution:**

### Part a

### Part b

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We know that **1 km=1000** m and **1 hr=3600 sec**.

Convert 342 m/s.

☚

Therefore, the speed of sound in km/hr is 1231.2 km/hr.

(a) What is its speed in kilometers per hour?

(b) Is it exceeding the 90 km/h speed limit?

At 118.8 km/h, the car is traveling faster than the speed limit.

(a) What is this in meters per second?

(b) How many miles per hour is this?

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