Question

An object is at rest at `(7 ,4 ,2 )` and constantly accelerates at a rate of `4/5 m/s` as it moves to point B. If point B is at `(3 ,6 ,9 )`, how long will it take for the object to reach point B? Assume that all coordinates are in meters.

Answer 1

`v_i= 0m/s`

`a= 4/5 m/s^2`

`D = 8.31m` source
`D = v_it+ 0.5at^2`

`=>8.61=0.5*(4/5)t^2`

`=>t^2=21.525`

`=>t= sqrt(21.525)~~4.64s`