Question

HELP! SHOW STEPS:

A flash of lightning is seen followed by the sound of the thunder 7.0 s later. If the temperature outside is 15 °C, how far away was the lightning strike?

Answer 1

1190 m

Step-by-step explanation:

From the question,

The speed of sound = 2×distance at which the lightning strike/time

v = 2x/t................... Equation 1

make x the subject of the equation

x = vt/2............... Equation 2

Given: t = 7 s,

Constant: v = 340 m/s (at 15 °C)

Substitute these values into equation 2

x = 340(7)/2

x = 2380/2

x = 1190 m.

Hence lightning strike 1190 m away.