1. Questions

maths

the height above ground level i

n meters of a missile launched vertically ,is given by h(t)=-16t3+100t .at what time is the missile 72mabove ground level ? (t is time in seconds)

  1. 👍
  2. 👎
  3. 👁
urge

  1. just solve for t in

    -16t^2 + 100t = 72

    This assumes a normal rocket trajectory under constant gravity. Not sure where a cubic function would work.

    1. 👍
    2. 👎
    Steve

  2. get vertex by complete square method

    1. 👍
    2. 👎
    jaleta

  4. to use derivatives

    1. 👍
    2. 👎
    bagena19

  5. I havenot respond!!!! But the question is more complex for me..

    1. 👍
    2. 👎
    Sosina ..10b mcs..

  6. I do'nt Know

    1. 👍
    2. 👎
    Haile

  8. Math

    1. 👍
    2. 👎
    Tole

Respond to this Question

First Name

Your Response

Similar Questions

  1. Maths

    The height above ground level in metres of a missile launch vertically, is given by h(t)=-16t³+100t at what time is the missile 72m above?

  2. physics

    You throw a 20-N rock vertically into the air from ground level. You observe that when it is 15.0 m above the ground, it is travelling at 25.0 m/s upward. Use the work-energy theorem to find a) its speed just as it left the

  3. physics

    A missile launched at a velocity of 30.0 m/s at an angle of 30.0 to the normal. What is the maximum height the missile attains? sin 60 = 0.866025404 0.866025404 x 30 = 25.98076211 25.98076211 x 25.98076211 / 2 / 9.8 = 34.4 m

  4. Algebra 2 h

    A model rocket is launched from the top of a building. The height (in meters) of the rocket above the ground is given by h( t) = -16t²+ 96t + 14, where t is the time (in seconds) since the rocket was launched. What is the

  1. Physics

    The height above ground level in meters of missile launched vertically is given by. h(t)= -16tcupe plus 100t. At what time is the missile 72m above ground level? (t is time in second)

  2. Maths

    The height above ground level in metres of a missile launched vertically, is given by h(t)=-16th^3+100t. At what time is missile 50m in above ground level?

  3. Algebra

    Help Please, ty A ball is launched at 20 meters per second (m/s) from a 60 meter tall platform. The equation for the object's height s at time t seconds after launch is s(t) = –4.9t2 + 20t + 60, where s is in meters. What is the

  4. UTA

    An object is thrown downward with an initial speed of 10 m/s from a height of 49 m above the ground. At the same instant, a second object is propelled vertically up from ground level with a speed of 29 m/s . At what height above

  1. Math

    a model rocket is launched from a roof into a large feild. The path of the rocket can be modeled by the equation y=-0.8x^(2)+12x+25.8 where x is the horizontal distance, in meters, from the starting point on the roof and y is the

  2. Mathematics

    The height above ground level in metres of a missile lanunched vertically, is given by h(t)=-16t^3+100t. at what time is the missile 50m above the ground level? [t is time in seconds]

  3. math

    A projectile is launched vertically upward from the top of a 240-foot building. This translates to the model y = -16t^2 + 32t + 240 where y is the height in feet and t is the time in seconds after it was launched, When will the

  4. Quadratic equations

    A ball is thrown vertically upwards From the top of a building of height 29.4 m 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 - 4.9t², then find the time

You can view more similar questions or ask a new question.