Answer:
bob up and down in the water.
Explanation:
usatestpre
Answer:
(c) 0.77 m/s^2 directed 35° south of west.
Explanation:
Let's first find the resultant force and its direction:
F = 20.808 N
To find the direction, we can just imagine the forces as lengths of a right angled triangle.
So, Force (west) will be our perpendicular.
and Force (south) will be our base.
Calculating the angle we have:
Theta = 54.78° (angle from south)
Direction of resultant force = 90 - 54.78 = 35.22° (south of west)
Taking out the acceleration, we get:
F = m * a
20.808 = 27 * a
a = 0.77 m/s^2
So the answer is (c)
I personally think that finding out how the hole in the ozone layer formed can use science as a method of inquiry.
To reach a vertical height of 13.8 ft against gravity, which has an acceleration of 32 ft/s^2, the required vertical speed can be calculated from the equation:
vi^2 - vf^2 = 2*g*h
Given that it has vf = 0 (it is not moving vertically at its maximum height), g = 32, and h = 13.8, we can solve for vi:
vi^2 = 29.72 ft/s
This is only its vertical speed, so this is equivalent to its original speed multiplied by the sine of the angle:
29.72 ft/s = (v_original)*(sin 42.2<span>°</span>)
v_original = 44.24 ft/s
Converting to m/s, this can be divided by 3.28 to get 13.49 m/s.