How long does it take a car traveling at 45km/h to travel 100.0 m?

8 seconds

Explanation:

Since the carspeed is in km/h, we need equal units, so we will make 100.0m 0.1000km.

Then we need to find how long it takes the car to travel 0.1km

We can use the formula distance=speed * time and get

0.1=45 * time

Therefore we get .002222... hours

Multiplying this by 3600 (to get seconds, 60x60), we get 8 seconds

answer; /// i believe that the correct answer is (c)

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered