You stand on the edge of a very tall building with three rocks, which you are going to throw off the edge. you throw the first rock straight outwards, the second rock at an angle 60° above the horizontal, and the third rock 30° below the horizontal.
if you throw all three rocks with the same initial speed, which will be moving the fastest when it hits the ground?
a. the third rock
b. the first rock
c. they will all have the same speed.
d. the second rock

The x-coordinate of a particle in curvilinear motion is given by x = 3.1t3 - 4.9t where x is in feet and t is in seconds. the y-component of acceleration in feet per second squared is given by ay = 2.3t. if the particle has y-components y = 0 and vy = 5.0 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t = 1.8 sec. sketch the path for the first 1.8 seconds of motion, and show the velocity and acceleration vectors for t = 1.8 sec. answers: v = ft/sec a = ft/sec2

Explain the consequences of this addiction to the brain tissue

What do elements in a family tend to share. a.) similar periods b.) similar groups c.) similar atomic symbols d.) similar chemical properties and characteristics