Question

The speed of sound is 344 m/s. You have built a really fantastic car that can really go fast. If the car can accelerate at 22.4 m/s, how much time till you reach the speed of sound? How many kilometers will you travel before you reach that speed?

Answer 1

Are you sure of the acceleration rate? The unites are incorrect.

Answer 2

v=u+at
u=0
a=22.4 m/s
v=344 m/s
find t

Answer 3

15.35

Answer 4

\[v^2-u^2=2as\]
find s

Answer 5

speed = distance/time

acceleration = speed/time

Answer 6

correction
a=22.4 m/s^2

Answer 7

You have the acceleration and the speed, solve for time using the acceleration equation.

Answer 8

Your answer needs to have units, not just a number.

Answer 9

do you agree? 15.35 km

Answer 10

@sshayer

Answer 11

15.36 seconds

Answer 12

it is rounded to two decimals.

Answer 13

it is time ,so time units.

Answer 14

for finding second part use formula given by me.
distance will be in meters.Change it in kilometers by dividing it by 1000

Answer 15

i am leaving now.