displacement, velocity and acceleration (1 Viewer)

[jkingx]

A particle moving in a straight line with a position x metres from a fixed point o at time t second is given by :
x= 4t^3 - 57t^2 + 108t
1) find the position vm/s and acceleration a ms^-2 as a function of time
2) find the position and acceleration when the particle is stationary.
3) at what time is the acceleration -66ms^-2
4) what is the total distance travelled in the first 5 seconds?

 

[tommykins]

for some reason these questions are wayy too simple for you to be unable to do it.

show some working.

1) v = dx/dt, a = dv/dt
2) dv/dt = 0, sub t in for x and a
3) dv/dt = -66, solve for t

 

[Drongoski]

for some reason these questions are wayy too simple for you to be unable to do it.

show some working.

1) v = dx/dt, a = dv/dt
2) dv/dt = 0, sub t in for x and a
3) dv/dt = -66, solve for t
4)

re 4) I think u won't get the distance with this integral.

 

[tommykins]

re 4) I think u won't get the distance with this integral.

oh wait lulz you don't hey.