Question

An object is at rest at `(3 ,8 ,8 )` and constantly accelerates at a rate of `7/5 m/s^2` as it moves to point B. If point B is at `(2 ,9 ,5 )`, how long will it take for the object to reach point B? Assume that all coordinates are in meters.

Answer 1

9.287m/s

Explanation:

First, we need to find the displacement of the object
s= `sqrt((2-3)^2+(9-8)^2+(5-8)^2`
`=sqrt11`
the velocity
`v=sqrt(2as)`
`v=sqrt(2*7/5*sqrt11)=9.287m/s`