Question

Almotorcycle has a maximum acceleration of 3 m/s2 in either direction and a maximum
speed of 25 m/s. How long does it take for the motoreycle to reach someone who is 1 km away?

Answer 1

Answer:

44.2 seconds

Explanation:

to accelerate to 25 m/s  will take   25/3 = 8.33 sec

   and cover  d = 1/2 a t^2 = 104.1 m

       this leaves  1000 - 104.1 = 895.92 meters to cover at 25 m/s

                = 35.84 seconds   added to the original 8.33 second required to get up to ax speed = 44.2 seconds