How can we solve this collision problem using similar terms?

[transgalactic]

two sticky balls
each one weighs 1kg
moving at g=-9.8k m/sec^2
at t=0
ball A:
ra(0)=7x+4.9z
va(0)=7x+3y

ball B:
rb(0)=49x+4.9z
vb(0)=-7x+3y

find ra(t) va(t) rb(t) vb(t) ??

i know collisions from high school and here it looks very different
i know
v(t)=v0 +a*t
x(t)=x0+v0*t +(a*t^2)/2
how to see things in similar terms?
how to solve it??

 

[tiny-tim]

acceleration is a vector

Hi transgalactic!

i know collisions from high school and here it looks very different
i know
v(t)=v0 +a*t
x(t)=x0+v0*t +(a*t^2)/2

Acceleration is a vector, so those equations work for each component separately.

So you can do three separate equations …

the x and y equations will have a = 0,

and the z equation will have a = g.