An object is thrown upward from the top of a 144-foot building with an initial velocity of 128 feet per second. the height h of the object after t seconds is given by the quadratic equation h equals negative 16 t squared plus 128 t plus 144. when will the object hit the ground?

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.

How to tell if a molecule is polar or nonpolar with electronegativity