An object is at rest at (1,7,4) and constantly accelerates at a rate of 54ms2 as it moves to point B. If point B is at (8,5,3), how long will it take for the object to reach point B? Assume that all coordinates are in meters.

1 Answer
Mar 30, 2016

t=3,43s

Explanation:

distance between (1,7,4) and (8,5,3):

s=(81)2+(57)2+(34)2

s=72+(2)2+(1)2

s=49+4+1

s=54

s=7,35 m

a=54=1,25 ms2

t=?

s=12at2

t2=2sa

t2=27,351,25

t2=11,76

t2=11,76

t=3,43s