When a ball is thrown straight up at an initial velocity of 54 feet per second. The height of the ball t seconds after it is thrown is given by the function `h(t)=54t-12t^(2)`. How many seconds after the ball is thrown will it return to the ground?

A ball is thrown vertically upward from the top of a building 96feet tall with an initial velocity of 80feet per second. The distance S (in feet )of the ball from the ground, after t seconds is S = 96 + 80t − 16t^(2) . After how many seconds does the ball strike the ground.

The height of a ball thrown into the air with an initial vertical velocity of 24 fts from a height of 6 feet above the ground is given by the equation: h=16t^(2)+24t+6, where t is the time in seconds,for the ball has been in air. After how many seconds is the ball at a height of 14 feets

A soccer ball is kicked upward from gound level with an initial velocity of 52 feet per second. The function h(t)=-16t^2+52t gives the ball's height , in feet , after t seconds. For how many seconds, to the nearest tenth of a second , is the ball at least 20 feet above the ground ?

A ball is thrown vertically upwards from the top of a building of height 29.4m and with an initial velocity 24.5 m/sec. If the height H of the ball from the ground level is given by H = 29.4 + 24.5t - 4.9t^(2) , then find the time taken by the ball to reach the ground.

Joe throws a ball upwards from a height of 12 feet from ground level. The height of the ball above the ground after time t second from when the ball was thrown is given by the expression h(t)= -t^(2)+at+b . The ball comes back to the ground after 8 second. What is the value of (a+b)?

A ball is thrown straight up with a velocity at t = 0 and returns to earth at t = t_1 . Which graph shows the correct motion ?

The height (in meters) at any time t (in seconds) of a ball thrown vertically varies according to equation h(t)=-16t^(2)+256t . How long after in seconds the ball reaches the hightest point

The height (in meters) at any time t (in seconds) of a ball thrown vertically varies according to equation h(t)=-16t^(2)+256t . How long after in seconds the ball reaches the hightest point

The height (in meters) at any time t (in seconds) of a ball thrown vertically varies according to equation h(t)=-16t^(2)+256t . How long after in seconds the ball reaches the hightest point