Answer:
Option D is the correct answer.
Explanation:
The specific gravity of copper is 8.91.
We have
We also have
1 kg = 2.205 lb
1 m = 3.28 ft
Substituting
Option D is the correct answer.
Answer:
use the kinematics equations and solve for time, after that use dleta dx=Vi*delta time
Answer:
a reference point allows you to determine the motion of an object :)
example: when your in a car and u look out the window and your moving fast than the car next to you. It seems that way because the car next to you is actually moving much slower.
So we want to know what is the magnitude of the horizontal component of acceleration ah if we know that the overall acceleration a=12 m/s^2 and the angle of overall acceleration and the horizontal acceleration is α=50°. We know that ah=a*cosα. So now it isn't hard to get the horizontal component: ah=12*cos50=12*0.64=7.71 m/s^2. So the correct answer is ah=7.71 m/s^2.
