Projectiles question

[swhylina]

Hi there, would like help on 13.b.i. How would you find a in this case?
Thanks

 

[khansaheb]

Hi there, would like help on 13.b.i. How would you find a in this case?
Thanks
View attachment 38328

Please show us what you have tried and exactly where you are stuck.

Please follow the rules of posting in this forum, as enunciated at:

READ BEFORE POSTING​

Please share your work/thoughts about this problem

 

[Dr.Peterson]

Hi there, would like help on 13.b.i. How would you find a in this case?
Thanks
View attachment 38328

What is t when they collide? Then, what does $\alpha$ have to be in order to collide where they do?

When you've shown your own thinking, we can help you with it.

 

[mario99]

Hi there, would like help on 13.b.i. How would you find a in this case?
Thanks

Hint: Collision happened when $x = 20 \ \text{m}$ and $y = 10 \ \text{m}$. These are the same components of vector $\bold{r}_A$ at collision. Can we form two simultanuous equations and solve for $t$ and $\alpha$?