A shell is fired from a gun at an angle of 30 degrees to the
horizon....
A shell is fired from a gun at an angle of 30 degrees to the
horizon. The initial velocity of the shell is 10 m/s. What velocity
will this shell have at a height of 2m? (Solve this problem by
using kinematic equations)
A
projectile is fired at an upward angle of 380 degrees from the top
of a 105-m-high cliff with a speed of 165m/s. What is its speed
when it strikes the ground below ?
An M-16 is fired from level ground at an upwards angle of 10
degrees with respect to the horizontal. The initial velocity of the
bullet is 948 m/s, but because it is fired at a 10 degree angle,
the vertical component of the initial velocity is 165 m/s and the
horizontal component is 934 m/s. Ignore air resistance and the
curvature of the earth in this problem. (Hint: See the videos
Projectile Motion Parts 9-13. For questions 9-14 and 17,...
A projectile is fired at an angle of 28 degrees above the
horizontal with an initial velocity of 1800 feet per second from an
altitude of 1,000 feet above the level 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 rocket is fired into the air at an angle of 25 degrees above
the horizontal with a velocity of 300 m/s. Using conservation of
energy, determin:
a. The maximum height the rocket will attain
b. The work done in order to get the rocket to this height
A cannon is elevated at an angle of 30 degrees and fires a
cannonball with a speed "v1". The Cannon is on top of a
cliff with a height of "h". Given v1 and h,
determine:
a) The speed of the cannoball when it is at its maximum
height.
b) The speed of the cannonball just before hitting the
ground.
c) The angle the cannonball's velocity makes with the horizontal
just before hitting the ground.
d) The horizontal distance the...
A cannonball at ground level is aimed 30 degrees above the
horizontal and is fired with an initial speed of 125 m/s. A) how
far away from the cannon will the cannonball hit the ground? B)
What is the highest point of its trajectory?
A circus clown is to be fired from a cannon at an angle of 60
degress to the horizontal
with an initial
speed of 60 ft/sec. The clown is
supposed to hit a cushion located 100 ft away. The circus is
held in a building with 50 ft
ceilings.
Can the performer be fired to the cushion without hitting the
ceiling?
Will the clown land on the cushion? If not, will he land short
or long of...
A cannon is shot at 48 m/s at an angle of 30 degrees to the
horizontal off a cliff that is 78.4 meters tall. How fast will the
cannonball be moving when it hits the ground at the bottom of the
cliff?
A shell is launched at angle 62° above the horizontal with
initial speed 30 m/s. It follows a typical projectile-motion
trajectory, but at the top of the trajectory, it explodes into two
pieces of equal mass. One fragment has speed 0 m/s immediately
after the explosion, and falls to the ground. How far from the
launch-point does the other fragment land, assuming level terrain
and negligible air resistance?
A 4.0-kg block is on an incline plane of 30 degrees angle with
respect to horizontal. a)What is the minimum coefficient of static
friction (μs)min is need to prevent it from
sliding down? b) If the surface μs is 0.30, less than
(μs)min now, how much force(F) is needed to
apply to the block horizontally to prevent it from sliding down?c)
If F is doubled, what’s the acceleration of the block up the
incline? Assume the coefficient of kinetic friction...