physics

A cannon fires a 0.639 kg shell with initial
velocity vi = 10 m/s in the direction θ = 55

above the horizontal.
The shell’s trajectory curves downward because of gravity, so at the time t = 0.217 s
the shell is below the straight line by some
vertical distance ∆h.
Find this distance ∆h in the absence of
air resistance. The acceleration of gravity is
9.8 m/s
2
.
Answer in units of m

  1. 👍
  2. 👎
  3. 👁
  1. Mistake: it has to be “above the straight line”

    Δh=vₒ(y) •t-gt²/2= vₒ•sinα•t- gt²/2=
    =10•sin55•0.217 – 9.8•0.217²/2 =
    = 1.78 – 0.23 =1.55 m

    1. 👍
    2. 👎
  2. Llkkk

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. 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

  2. Physics

    A cannon is fired from the ground at an angle of 30 degrees. It is being shot an an initial velocity of 200m/s. What is the maximum height of the cannon ball? How fat will the cannon ball travel before it hits the ground

  3. physics

    A cannon, located 60.0 m from the base of a vertical 25.0 -m-tall cliff, shoots a 15-kg shell at 43.0 degrees above the horizontal toward the cliff. (a) What must the minimum muzzle velocity be for the shell to clear the top of

  4. physics

    A cannon is fired horizontally from a platform (see figure). The platform rests on a flat, icy, frictionless surface. Just after the shell is fired and while it is moving through the barrel of the gun, the shell (mass 3.0 kg) has

  1. chemistry

    At 10 degrees C a cannon fires a shell at 1324m/s a) how fast is the shell traveling relative to the soundwave of the explosion? b) how far away from the cannon is the observer how sees the shell pass by 2s before the sound of the

  2. science

    A cannon shell is fired straight up from the ground at an initial speed of 225 m/s. After how much time is the shell at a height of 6.20 x 102 m above the ground and moving downward? (a) 2.96 s (b) 17.3 s (c) 25.4 s (d) 33.6 s (e)

  3. Science

    A gun fires a shell at an angle of elevation of 30 degrees with a velocity of 2*10^3m/s. What is the horizontal and vertical component of the velocity? What is the range of the shell? how high will the ball rise

  4. physics

    During World War I, the Germans had a gun called Big Bertha that was used to shell Paris. The shell had an initial speed of 2.39 km/s at an initial inclination of 49.6 ◦ to the horizontal. The acceleration of gravity is 9.8 m/s

  1. physics

    A 500-kg cannon and a supply of 80 cannon balls, each with a mass of 45.0 kg, are inside a sealed railroad car with a mass of 11000 kg and a length of 49 m. The cannon fires to the right; the car recoils to the left. The cannon

  2. 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

  3. Physics

    The cannon on a pirate ships shoots cannon balls with a speed of 350m/s (the muzzle velocity). The cannon can be adjusted to shoot at any elevation above the horizontal. If the cannon’s barrel is 2m long and the force on the

  4. Physics

    A cannon fires a shell straight upward; 2.1 s after it is launched, the shell is moving upward with a speed of 20 m/s. Assuming air resistance is negligible, find the speed (magnitude of velocity) of the shell at launch and 4.7 s

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