Question

a car traveling 95 km/h is 110m behind a truck traveling 75km/h. How long will it take the car to reach the truck?

Answer 1

speed of car = 95 km/h

speed of truck = 75 km/h

relative speed of car with respect to truck = 95 - 75 = 20 km/h

now we will convert it into m/s

`v_r = 20 * (1000)/(3600) = 5.56 m/s`

now time to cross the truck will be given as

`time = (distance)/(speed)`

`time = (110)/(5.56)`

time = 19.8 s

so it will take 19.8 s to cross the truck