a moving electron accelerates at 5200m/s^2 in a 55.0 direction. After 0.350as,it has a velocity of 6598m/s in a -20.5 direction.

Question

4 years ago

11

What is the y-component of the initial velocity?

1 answer:

Lady bird [3.3K] · Answer 1 · 2021-12-26T14:29:52+03:00

Answer:

-3802 m/s

Explanation:

The y-component of the final velocity is ...

(6598 m/s)·sin(-20.5°) ≈ -2310.7 m/s

The y-component of the velocity due to acceleration is ...

(5200 m/s²)(0.350 s)sin(55°) ≈ 1490.9 m/s

Then the initial velocity in the y-direction is found from ...

initial velocity + change in velocity = final velocity

initial velocity = (final velocity) - (change in velocity)

= -2310.7 m/s - 1490.9 m/s ≈ -3802 m/s