Question

The initial speed of a projectile is 1500 ft/sec, fired at the angle of 30 degrees. What is the speed of the object when it hits the ground?

Answer #1

A projectile is fired from the edge of a 240m cliff
with an initial speed of 65m/s at an angle of 45degrees above the
horizontal. how much time until projectile hits the ground
below?

A projectile is fired at an angle of 28 degrees above the
horizontal with an initial velocity of 1,800 feet per second from
an altitude of 1,000 feet above the ground.
A) Formulate the vector valued function (in simplified form) for
the position of the projectile at any time, t.
B) When and where (in terms of down range distance) does the
projectile strike the ground? Be clear and label your results,
including units.
C) When does the projectile reach...

A ball is thrown at an unknown angle. Find its initial speed (in
ft/sec) if it hits the ground 3380 ft away after 26 seconds. Assume
g=32.2 ft/sec2 .
Answer is one of the following
438.32 455.18 472.04 364.97 294.79 649.57 414.74 447.92 275.8 567

A 44.0-kg projectile is fired at an angle of 30.0° above the
horizontal with an initial speed of 144 m/s from the top of a cliff
120 m above level ground, where the ground is taken to be
y = 0.
(a) What is the initial total mechanical energy of the
projectile? (Give your answer to at least three significant
figures.)
(b) Suppose the projectile is traveling 102.1 m/s at its maximum
height of y = 336 m.
How much...

A projectile is fired from ground level at an angle of 60° above
the horizontal with an initial speed of 30 m/s. What are the
magnitude and direction (relative to horizontal) of its
instantaneous velocity at
(a) the moment it is fired,
(b) the moment it reaches its maximum height, and
(c) the moment before it hits the ground?

A projectile is fired with an initial speed of 180 m/s and angle
of elevation 60°. The projectile is fired from a position 110 m
above the ground. (Recall g ≈ 9.8 m/s2. Round
your answers to the nearest whole number.)
(a) Find the range of the projectile.
m
(b) Find the maximum height reached.
m
(c) Find the speed at impact.
m/s

An object with a mass of 40.0 kg is fired with an initial speed
of 1.28 x 102 m/s at an angle of 30.0° above the
horizontal from a 116 m high cliff (take ground level to be
y = 0 m).
(a) Determine the initial total mechanical energy of the
projectile.
(b) If when the projectile is at its maximum height of
y = 287 m, it is traveling 90.7 m/s, determine the amount
of work that has been...

A projectile of mass 2 kg is fired at an angle to the ground
such that its flight is parabolic. At a certain point in its
flight, its potential energy is 150 J and its kinetic energy is 250
J. What is the speed of the projectile when it hits the ground? You
may assume that the potential energy at ground level is zero and
there is no air resistance?

A projectile is fired from the ground (you can assume the
initial height is the same as the ground) in a field so there are
no obstacles in its way. The same projectile was then fired in the
same way toward a wall that is a horizontal distance (d) m from
where the projectile was fired, and the projectile (as it's going
down) hit the wall. If the wall were slightly farther from where
the projectile was launched (the projectile...

A projectile is fired with an initial speed of 37.6 m/s at an
angle of 41.7 ∘ above the horizontal on a long flat firing
range.
Determine the maximum height reached by the projectile.
Determine the total time in the air.
Determine the total horizontal distance covered (that is, the
range)
Determine the speed of the projectile 1.00 s after firing.

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