Aball is thrown upward in the air, and its height above the ground after t seconds is h ( t ) = 76 ⋅ t − 16 t 2 feet. find the time t when the ball will be traveling upward at 19 feet per second.

t = 1.78 s

Explanation:

As we know that the height of the ball from ground is given as a function of time

now we know that rate of change in the position of ball is known as velocity of the ball

it is given as

now we have to find the time at which the velocity of ball is 19 ft/s in upward direction so we have

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.