Question

Im so confused… please help me

Answer 1

Answer:

1.715km

Step-by-step explanation:

If it travels 343m/s, and we know there are 1000m in a km therefore it travels 0.343km in one second.

0.343km x 5s= 1.715km in 5 seconds.

Answer 2

Answer:

To find the speed of sound you must use this equation: v= (331.5 +0.6 x T) m/s.

Step-by-step explanation:

You have to convert 68 F to Celsius which is 20 degrees. Then write down the equation and the knowns and unknowns.

So the equation is this

v= (331.5 + 0.6 x 20) m/s

The answer is: 0.3435 km/s times 5 = 1.7175 (5km)

Make sure to show all these steps. I believe it is correct.