contestada

Consider a particle with initial velocity v that has magnitude 12.0 m/s and is directed 60.0 degrees above the negative x axis.
Part A
What is the x component vx of v ?
Express your answer in meters per second.
Part B
What is the y component vy of v ?
Express your answer in meters per second.

Respuesta :

Answer:

v_x = -6.00 m/s

v_y = 10.4 m/s

Explanation:

To calculate the velocity of the x-component we must use the cosine function:

[tex]v_{x} =-v_{0}cos(\alpha )[/tex], where ∝ is the angle 60°, and [tex]v_{0}[/tex] is the velocity 12.0 m/s (note: the negative sign due to the question stating it is "above the negative x-axis).

This gives us a value [tex]v_{x} =-6[/tex] m/s

Similarly for the y-component, we must use the sine function:

[tex]v_{y}=v_{0}sin(\alpha)[/tex]

which gives us a value [tex]v_{y} = 10.392...[/tex] ≈ 10.4 m/s (since there are 3 significant figures in the information given in the question, this is rounded to 10.4 m/s).