Rocket-powered sleds are used to test thehuman response to acceleratio

1.	Rocket-powered sleds are used to test thehuman response to acceleration. If arocket-powered sled is accelerated to aspeed of 444 m/s in 1.83 seconds, thenwhat is the acceleration and what is thedistance that the sled travels?
Answer» Given: vi = 0 m/s vf = 444 m/s t = 1.83 s Find: a = ??d = ?? a = (Delta v)/ta = (444 m/s - 0 m/s)/(1.83 s) a = 243 m/s2 d = vit + 0.5at2 d = (0 m/s)(1.83 s)+ 0.5(243 m/s2)(1.83 s)2 d = 0 m + 406 m d = 406 m (Note: the d can also be calculated using the equation vf2 = vi2 + 2ad)

Rocket-powered sleds are used to test thehuman response to acceleration. If arocket-powered sled is accelerated to aspeed of 444 m/s in 1.83 seconds, thenwhat is the acceleration and what is thedistance that the sled travels?

Answer»

Given:

vi = 0 m/s

vf = 444 m/s

t = 1.83 s

Find:

a = ??d = ??

a = (Delta v)/ta = (444 m/s - 0 m/s)/(1.83 s)

a = 243 m/s2

d = vi*t + 0.5*a*t2

d = (0 m/s)*(1.83 s)+ 0.5*(243 m/s2)*(1.83 s)2

d = 0 m + 406 m

d = 406 m

(Note: the d can also be calculated using the equation vf2 = vi2 + 2*a*d)