physics

10. A cannon elevated at an angle of 35º to the
horizontal fires a cannonball, which travels the path
shown in the diagram below. [Neglect air resistance and
assume the ball lands at the same height above the
ground from which it was launched.]
If the ball lands 7.0 × 10² meters from the cannon 10.
seconds after it was fired, what is the horizontal
component of its initial velocity?
(A) 7.0 m/s (B) 35 m/s (C) 49 m/s (D) 70. m/s

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
  1. The horizontal component of velocity remains constant, so divide 700 m by 10 s.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  2. 49 m/s

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  3. 49 m\s

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  4. 49 m/s my man

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  5. Bro, i put 49 m/s, but it's actually 70 m/s

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  6. its 70

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  7. 70 m/s

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
  8. the initial HORIZONTAl speed is 70 m/s
    and the initial VERTICAL speed is 49 m/s
    ignoring air resistance we know that the horizontal velocity is constant so you can use the formula d/t=v
    700/10= 70 m/s
    to find the initial vertical speed you can plug the 70m/s into the tangent function which is tan θ = vi(y-axis) / vi(x-axis)
    tan 35° = vi(y-axis) / 70
    rearrange it to solve for vi (y-axis)
    vi(y-axis) = 70 * tan 35°
    vi (y-axis) = 49 m/s
    ** keep in mind y axis is for the vertical
    **and x axis is for the horizontal

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics.

    A 20.0 kg cannon ball is fired from a cannnon with muzzle speed of 1000 m/s at an angle of 37.0 with the horizontal. A second ball is fired at an angle of 90.0. Use the conservation of energy principle to find a] the maximum

  2. Physics

    a) A cannonball is fired horizontally from the top of a cliff. The cannon is at height H = 100 m above ground level, and the ball is fired with initial horizontal speed v_0. Assume acceleration due to gravity to be g = 9.80 m/s^2.

  3. algebra

    A cannon fires a cannonball as shown in the figure. The path of the cannonball is a parabola with vertex at the highest point of the path. If the cannonball lands 1600 ft from the cannon and the highest point it reaches is 3200 ft

  4. physics

    A cannon barrel is elevated at an angle of 45°. It fires a ball with a speed of 350 m/s. (For the following questions, ignore air resistance.) (a) What height does the ball reach? (b) How long is the ball in the air? (c) What is

  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

  2. physics

    King Arthur's knights fire a cannon from the top of the castle wall. The cannonball is fired at a speed of 54 m/s and at an angle of 34°. A cannonball that was accidentally dropped hits the moat below in 1.1 s.(a) (a)How far from

  3. physics

    When a cannon fires a cannonball, the cannon will recoil backward because the a) energy of the cannonball and the cannon is conserved b) momentum of the cannonball and cannon is conserved c)energy of the cannon is greater than the

  4. Physics

    A cannon of mass 200kg, fires a cannonball with a mass of 10kg. The cannon ball leaves the barrel of the cannon with a velocity of 60 m/s. Using the law of conservation of momentum , explain what happens to the cannon when the

  1. physics

    A cannonball is shot from a cannon on a cliff at a height of 18.9 m at a ship on the ocean. The cannonball is shot with an initial velocity of 15.1 m/s at an angle of 24.7 degrees above the horizontal. #1- What is the total

  2. physics

    At a circus, a human cannonball is shot from a cannon at 15m/s at an angle of 40 degrees from horizontal. She leaves the cannon 1m off the ground and lands on the way down in a net 2m off the ground. Determine her horizontal

  3. physics

    A cannon is mounted on a tower above a wide, level field. The barrel of the cannon is 20 m above the ground below. A cannonball is fired horizontally with an initial speed of 900 m/s. Assuming air resistance can be neglected,

  4. physics

    On a 100 meter high cliff, a cannon fires a cannonball with an initial speed of 50 m/s at an angle of 53° to the horizontal. The ball passes through its maximum height at point A, point B which is at the same height as the

View more similar questions or ask a new question.