Physics

A cannon ball is fired horizontally with a velocity of 50m/s from the top of a cliff 90m high,after how many seconds will it strike the plane at the foot of the cliff.at what distance from the foot of the cliff will it strike and with what velocity will it strike the ground.

  1. 👍 0
  2. 👎 0
  3. 👁 260
asked by Temi
  1. 0.5g*t^2 = 90 m.
    4.9t^2 = 90
    t^2 = 18.37
    t = 4.29 s.

    Distance = Xo*t = 50m/s * 4.29s=214.3 m.

    V = Vo+g*t = 0 + 9.8*4.29 = 42 m/s.

    1. 👍 0
    2. 👎 0
    posted by Henry
  2. Xo = 50 m/s. = Hor. component.
    Y = 42 m/s = Ver. component.
    Tot. velocity = sqrt(50^2+42^2)=65.3 m/s

    1. 👍 0
    2. 👎 0
    posted by Henry

Respond to this Question

First Name

Your Response

Similar Questions

  1. AP Physics

    Momentum One of those Civil War cannons is fired. The Cannon has a mass of 873kg It fires a 35.0kg cannon ball at a velocity of 145 m/s at an elevation angle of 35.0 degrees. The length of the barrel is 2.10m. (a) What is the

    asked by Daisy on January 8, 2013
  2. Physics

    A cannon ball is fired horizontally from a cannon that is 40.7m above the ground. The initial velocity of the cannon ball is 234m/s. How much time does the cannon ball spend in the air?

    asked by Mary on January 29, 2017
  3. Science

    A cannon ball is fired horizontally with a velocity of 50m/s from the top of a cliff 90m high,after how many seconds will it strike the plane at the foot of the cliff.at what distance from the foot of the cliff will it strike and

    asked by Temi on January 26, 2014
  4. Physics

    A cannon ball is fired horizontally with a velocity of 50m/s from the top of a cliff 90m high,after how many seconds will it strike the plane at the foot of the cliff.at what distance from the foot of the cliff will it strike and

    asked by Temi on January 26, 2014
  5. projectives

    A cannon ball is fired horizontally with a velocity of 50m/s from the top of a cliff of 90mh. after how many seconds will it strike the plane at the foot of the cliff and at what distance at the foot of the cliff will it strike?

    asked by physics on November 9, 2014
  6. physics

    . A cannon ball is fired horizontally with an initial speed of 75 m/s from the top of a 50-m tall building. When the ball hits the ground, its velocity vector makes an angle θ with the horizontal. What is θ ?

    asked by vector on June 27, 2013
  7. Physics

    A cannon ball is fired horizontally with an initial speed of 75 m/s from the top of a 50-m tall building. When the ball hits the ground, its velocity vector makes an angle θ with the horizontal. What is θ

    asked by xavier on February 11, 2015
  8. physics

    A cannon ball is fired horizontally with an initial speed of 75 m/s from the top of a 50 m tall building. When the ball hits the ground, its velocity vector makes an angle with the horizontal. What is the angle?

    asked by Tonya on September 18, 2013
  9. physics

    A cannon ball is fired horizontally with an initial speed of 75 m/s from the top of a 50 m tall building. When the ball hits the ground, its velocity vector makes an angle with the horizontal. What is the angle?

    asked by Tonya on September 18, 2013
  10. Physics

    which of the following is NOT true about the path of a cannon ball launched horizontally from the earth's surface if air resistance is neglected? a. the cannnonball has a uniform horizontal velocity b.the total velocity of the

    asked by Anonymous on February 20, 2017

More Similar Questions