Physics

A 2.50 kg fireworks shell is fired straight up from a mortar and reaches a height of 110. m.
(a) Neglecting air resistance (a poor assumption, but we will make it for this example), calculate
the shell’s velocity when it leaves the mortar. (b) The mortar itself is a tube 0.450 m long.
Calculate the average acceleration of the shell in the tube as it goes from zero to the velocity found
in (a). (c) What is the average net force on the shell in the mortar? Food for thought: How does
this force compare to the weight of the shell?

  1. 👍
  2. 👎
  3. 👁
  1. a. vf^2=vi^2+2gh
    vf=0, g=-9,8 solve for vi.

    b. same equation as above, solve for a where g is.

    c. Force*distance=1/2 m v^2

    1. 👍
    2. 👎
    👤
    bobpursley
  2. Thank you so much

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. algebra 2 A

    Unit 5: Quadratic functions and equations. I need help with the Firework display portfolio?? Fireworks Display Portfolio ALGEBRA 2 A: QUADRATIC FUNCTIONS AND EQUATIONS Directions: You are part of a fireworks crew assembling a

  2. physics

    a trench mortar fires a shell at an angle of 30 degrees with the horizontal and with a speed of 500 m/s. find its range and the maximum height it attains?

  3. Physics

    A shell is fired from the ground with an initial speed of 1.60 × 103 m/s (approximately five times the speed of sound) at an initial angle of 43.0◦ to the horizontal. The acceleration of gravity is 9.81 m/s2 . a) Neglecting air

  4. physics

    An artillery shell is fired from a cannon with an elevation of a = 30° and muzzle velocity of v = 300 m/s . Find the time of flight of the shell, and its range.

  1. Physics

    A projectile is fired straight upward at 143 m/s. How fast is it moving at the instant it reaches the top of its trajectory? Answer in units of m/s. How fast is it moving at the instant it reaches the top of its trajectory if the

  2. math

    An object is thrown or fired straight upwards at an initial speed of v_0 ft⁄s will reach height h feet after t seconds, where h and t are related to the formula h=-16t^2+v_0 t Suppose the object is fired straight upwards with an

  3. Math B

    The path of a rocket fired during a fireworks display is given by the equation s(t)=64t2,( t do the 2nd power) where t is the time in seconds and s in the height in feet. What is the maximum height in feet the rocket will reach?

  4. physics

    A mortar fires a projectile at an angle of of 30 degrees above the horizontal with a velocity of 500 m/s. A soldier spots a tank to be travelling in the direction of the mortar at a constant the rate of 4 m/s. How far should the

  1. 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)

  2. physics

    A shell leaves a mortar with a muzzle velocity of 500 ft/s directed upward at 60 degrees with the horizontal. Determine the position of the shell and its resultant velocity 20 s after firing. how high will it rise?

  3. 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

  4. Physics

    a shell is fired at a velocity of 300 m/s at an angle of 30. a. how far does it go? b. what are it's time of flight and maximum altitude? c. At what other angle could the shell have been fired to have the range?

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