Answer:
The Sled goes fast at 25.60 m/s
Step-by-step explanation:
According to fundamentals, velocity of any body is equal to the product of its acceleration and time period that is,
velocity = acceleration x time ;
According to question a sled starts from rest and slides down a
hill and the time taken to happen so is 4.24s
we have, acceleration =

therefore acceleration = 9.81

= 6.039
for the case under consideration;
hence the velocity may be obtained as v=6.039x4.24 = 25.60 m/s