Two boys are throwing a baseball back and forth. the ball is 4 ft above the ground when it leaves one child’s hand with an upward velocity of 36 ft/s. if acceleration due to gravity is –16 ft/s2, how high above the ground is the ball 2 s after it is thrown?
h(t) = at2 + vt + h0
a 12 ft
b 20 ft
c 76 ft
d 116 ft

Complete the truth table a. t, f, f, t b. t f f f c. f t f t d f t f t

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

The ksp expression for the system pbcl2(s) pb+2(aq) + 2 cl-(aq) is: [pbc12][pb+2][2cl-] [pb+2][cl-]2 [pb+2][2cl-]2 [pbcl2][pb+2][cl-]2 [pb+2][2cl-]2[pbcl2]