DYNAMICS QUESTION S.O.S (kinematics of particle)

[chrishatch]

3 Days... and i still can't figure out 'how','why' and 'wat' is the answer...


THE ACCELERATION OF A PARTICLE IS DEFINED BY THE RELATION a=-8m/s^2.
KNOWING THAT x=20m when t=4s and that x=4m when v=16m/s,
determine:

a) the time when the velocity is ZERO.
b) the velocity and the total distance traveled when t = 11s...

THANK YOU...

 

[tiny-tim]

welcome to pf!

hi chrishatch! welcome to pf!

(try using the X² icon just above the Reply box )

always start questions like this by saying "let x and v be x₀ and v₀ at t = 0" …

then use the standard constant acceleration equations with the given data …

what do you get? ​