Math

Isaac throws an apple straight up (in the positive direction) from 1.0 m above the ground, reaching a maximum height of 35 meters. Neglecting air resistance, what is the ball’s velocity when it hits the ground?

  1. 👍 1
  2. 👎 1
  3. 👁 1,031
asked by Julie
  1. h(t) = 1 + vt - 16t^2

    max height is reached at t = v/32, so

    1 + v(v/32) - 16(v/32)^2 = 35
    v = 8√34

    h(t) = 1 + 8√34 t - 16t^2
    h=0 at t=2.94

    v(t) = 8√34 - 32t, so when h=0,
    v = 8√34 - 32(2.94) = -47.43 ft/s

    1. 👍 1
    2. 👎 0
    posted by Steve
  2. V^2=Vo^2+2a(Xf-Xo)
    =O^2+2(-9.8)(35-0)
    Vf^2=-686
    Square root 686 which equals
    Vf= -26.2 m/s

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. physic

    A circus performer throws an apple toward a hoop held by a performer on a platform (see figure below). The thrower aims for the hoop and throws with a speed of 22 m/s. At the exact moment the thrower releases the apple, the other

    asked by joy on February 1, 2018
  2. physic

    A circus performer throws an apple toward a hoop held by a performer on a platform (see figure below). The thrower aims for the hoop and throws with a speed of 28 m/s. At the exact moment the thrower releases the apple, the other

    asked by joy on January 30, 2018
  3. physic

    A circus performer throws an apple toward a hoop held by a performer on a platform (see figure below). The thrower aims for the hoop and throws with a speed of 30 m/s. At the exact moment the thrower releases the apple, the other

    asked by Dr. Neutron on February 1, 2018
  4. physic

    A circus performer throws an apple toward a hoop held by a performer on a platform (see figure below). The thrower aims for the hoop and throws with a speed of 22 m/s. At the exact moment the thrower releases the apple, the other

    asked by joy on February 1, 2018
  5. Physics

    Maria throws an apple vertically upward from a height of 1.3m unit an initial velocity of velocity of 12.4m/s 1. will the apple reach a friend in a tree house 5.3m above the ground. 2. If the apple is not caught, how long will the

    asked by Jessica on February 6, 2013
  6. Physics help!!

    An archer shoots an arrow with a velocity of 45 m/s at an angle of 50 degrees with the horizontal.An assistant standing on the level ground 150m downrange from the launch point throws an apple straight up with the minimum intial

    asked by Sammie on February 18, 2013
  7. Physics urgent

    An archer shoots an arrow with a velocity of 45.0m/s at an angle of 50.0degrees with the horizontal.An assistant standing on the level ground 150m downrange from the launch point throws an apple straight up with the minimum intial

    asked by Sammie on February 22, 2013
  8. Physics Quick!

    An archer shoots an arrow with a velocity of 49.5 m/s at an angle of 52.0¡Æ with the horizontal. An assistant standing on the level ground 150 m downrange from the launch point throws an apple straight up with the minimum

    asked by kk2 on August 19, 2012
  9. Physics

    Student A is on a 9m Hugh bridge while Student B is on the ground. Student B throws an apple up to Student B with a velocity of 18m/s. How long does it take for the apple to reach student A's hand? if student A is unable to catch

    asked by Sandara on January 23, 2014
  10. Physics

    Student A is on a 9m high bridge while Student B is on the ground. Student B throws an apple up to Student B with a velocity of 18m/s. How long does it take for the apple to reach student A's hand? if student A is unable to catch

    asked by Sandara on January 23, 2014

More Similar Questions