Projectiles on an Incline

  • Thread starter ebmaj7
  • Start date
  • #1
1
0

Homework Statement



Incline_Question.png


Part (a) was fine, managed it okay.

Homework Equations



[itex]v_x = 20\cos30 -9.8\sin35 = 3.32[/itex]

[itex]v_y = 20\sin30 -9.8\cos35 = -10[/itex]

Part (b) is what is giving me trouble at the moment.

The Attempt at a Solution



[itex]\dfrac{4}{5} = \dfrac{v_b - v_a}{u_a - u_b}[/itex]

I really don't know where to go from here.

The plane isn't moving. So if the plane was object 'b' then vb and ub would both be 0.

The speed at which the projectile strikes point A (the final velocity) = the initial velocity after the collision has taken place.

You could then solve to find the velocity of the projectile after the collision.

Revising for my Mechanics 3 A level exam, AQA.
 

Answers and Replies

Related Threads on Projectiles on an Incline

  • Last Post
Replies
9
Views
784
  • Last Post
Replies
3
Views
1K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
7
Views
16K
  • Last Post
Replies
10
Views
2K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
24
Views
3K
  • Last Post
Replies
5
Views
2K
Replies
2
Views
3K
Top