Please help me with this question, especially the angle part. I have solved the initial velocity already. I don't know what to d

Question

Lady_Fox [76]

3 years ago

10

Please help me with this question, especially the angle part. I have solved the initial velocity already. I don't know what to d

o. Thank you.

Physics

1 answer:

Helga [31] · Answer 1 · 2022-07-17T14:57:52+03:00

I think you almost got it.

At the top, the velocity only has horizontal component, so v=12 m/s is v_x, which is v*cos(theta), because v_x is constant, so the same when it was launched or now.

With the value of the initial speed (28 m/s, which is the total speed), you can set

v_x = v * cos( theta ) ---> 12 = 28*cos(theta) --> cos(theta)=12/28=3/7

or theta = 64.62 deg, it is D. Think about it. I hope you see it.