Respuesta :

Answer:

The Sled goes fast at 25.60 m/s

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 [tex]38.0^{\circ}[/tex]  hill and the time taken to happen so is 4.24s  

we have, acceleration =[tex]\mathrm{g} \sin \theta[/tex]

therefore acceleration = 9.81[tex]\sin 38^{\circ}[/tex]

                           = 6.039 [tex]\frac{m}{s^{2}}[/tex]  for the case under consideration;

hence the velocity may be obtained as v=6.039x4.24 = 25.60 m/s

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