Question

A truck undergoes a constant acceleration of 2.0 meters/second2 on a highway that slopes upward at an angle of 30.0° to the horizontal. What is the magnitude of the horizontal component of the acceleration?

Answer 1

a*cos(theta)

Answer 2

i dont get this fromeula.. as you can see im a loser at science its my worst subject..

Answer 3

do you know what is cos(theta)=?

Answer 4

nope/:

Answer 5

okay...let me explain..

Answer 6

cos(theta )=AB/AC and sin(theta)=CB/AC

Answer 7

now AC=a
then cos(theta)=AB/a
or AB=a*cos(theta)

Answer 8

in this question a and theta is known to you...need to know AB

Answer 9

now i get it (:

Answer 10

:)