Questions 37 and 38 refer to the following information.
`h(t)=-4.9t^(2)+88.2t`
When a projectile is launched from ground level, the equation above gives the number of meters in its height, h, after t seconds have elapsed.
Q. How many seconds after the projectile is launched will it hit the ground?

Questions 37 and 38 refer to the following information. h(t)=-4.9t^(2)+88.2t When a projectile is launched from ground level, the equation above gives the number of meters in its height, h, after t seconds have elapsed. Q. What is the maximum height the projectile reaches, correct to the nearest meter?

The formula to determine the height of the rocket above the ground at any time during the rocket’s flight is given by: h=119t-7t2 where t =the time, in seconds, that has elapsed since the rocket was launched, and h = the height, in meters, of the rocket above the ground at time t . The value of h was 0 when the rocket hit the ground, How many seconds after the rocket was launched did it hit the ground?

A particle is projected vertically upwards and is at a height h after t_(1) seconds and again after t_(2) seconds then

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 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 stone thrown upwards from ground level, has its equation of height h=490t-4.9t^(2) where 'h' is in metres and t is in seconds respectively. What is the maximum height reached by it ?

A stone thrown upwards from ground level, has its equation of height h=490t-4.9t^(2) where 'h' is in metres and t is in seconds respectively. What is the maximum height reached by it ?

A body is released form the top of a tower of height h meters. It takes t seconds to reach the ground. Where is the ball at the time t/2 sec ?