- #1
demonelite123
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you are sliding down a slide at constant speed of 2m/s. the angle the slide makes with the ground is 30 degrees. At some point while you are sliding down, you shoot a gun and the bullet travels horizontally at the constant speed of 5m/s. at that time, you are also 3m above the ground. How far does the bullet go? (what is the bullets horizontal distance traveled?)
based on how i drew my diagram, i drew a triangle so that i am sliding down to the right. so the triangle has its hypotenuse facing the right side.
so i did 5<1,0> + 2(cos150, sin150> = <3.26, 1>
then i did -3 = t - 4.9t^2
i used quadratic equation, solved for t, and got t=.687. then i plugged t into the equation delta x = 3.26t so the distance the bullet traveled is around 2.24m. i tried using cos30 and sin30 instead and i got 4.63m. which is the correct answer? and how do you know which angle to use?
based on how i drew my diagram, i drew a triangle so that i am sliding down to the right. so the triangle has its hypotenuse facing the right side.
so i did 5<1,0> + 2(cos150, sin150> = <3.26, 1>
then i did -3 = t - 4.9t^2
i used quadratic equation, solved for t, and got t=.687. then i plugged t into the equation delta x = 3.26t so the distance the bullet traveled is around 2.24m. i tried using cos30 and sin30 instead and i got 4.63m. which is the correct answer? and how do you know which angle to use?