acceleration. linear motion. I'm stuck!
Homework Statement
a train moves at a velocity of 60 m s-1 and stops after a distance of 600m. what is its deceleration?Homework Equations
v=s/t
The Attempt at a Solution
this is my working:
u= 0 m s-1
v= 60 m s-1
s= 600 m
v=s/t
60=600/t
t=10 s
...and...
Straight line! help!
Homework Statement
the straight line 3y-x-k=0 is the normal to the curve y=4x3+12x2+9x-1 at point A. The curve has two turning points.
a)find the coordinates of A
b)find the coordinates of the turning points of the curve. then, determine whether the turning points are...