Question

A 4 kg mortar shell is fired at an angle of 60° above the horizontal with an initial speed of v0. At its highest point its speed is 120 m/s. (a) At this highest point, what is the change in its gravitational potential energy relative to its initial launch position? Neglect air resistance? (b) How far above the launch point did the mortar travel to get to its highest point? Neglect air resistance

Answer #1

I will get back to you asap.

Initial velocity of a shell fired is 40 m/s at an angle of 60º
above the horizontal. Draw a schematic sketch of the projection
motion and write down the basic equations needed to solve this
problem. (a) Find horizontal and vertical components of shell’s
initial velocity. (b) How long does it take for the shell to reach
the maximum height above ground? (c) At its highest point, what are
the horizontal and vertical components of its acceleration and
velocity? (Ignore...

A cannon is fired at an angle of 50 ° with the horizontal. If
the cannonball has an initial velocity of 757 feet per second, how
far (horizontally) will the shot travel? Assume the initial height
of the projectile is 0 feet, and neglect air resistance.

A cannon is fired over level ground with its barrel at an angle
of 45.0o to the horizontal. The shell takes 51 s to hit the ground.
Neglect air resistance and the height of the muzzle. How far from
the cannon did the shell land? The units are not in the mks system
here, but the answer is unambiguous.

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...

an artillery shell is fired with an initial velocity
of 300m/s at 53.5° above the horizontal. To clear an avalanche, it
explodes on a mountainside 37.5s after firing. What are the x and y
coordinates of the shell where it explodes, relative to its firing
point?

A projectile is fired from ground level at an angle of 65 ∘
above the horizontal with an initial speed of 29 m/s .
What is the magnitude of its instantaneous velocity at the
moment it is fired?
What is the direction (relative to horizontal) of its
instantaneous velocity at the moment it is fired?
What is the magnitude of its instantaneous velocity the moment
it reaches its maximum height?
What is the direction (relative to horizontal) of its
instantaneous...

A projectile is launched at a speed of 39.1m/s and an angle of
25˚ above the horizontal surface so that it lands on a target 120 m
away. Neglect air resistance. The projectile is in the air for
3.4s.
Someone constructs a wall between the launch site and the target
that is just high enough to block the projectile's path. If the
launch speed cannot be changed, at what angle could we launch the
projectile to ensure that it still...

An artillery shell is fired with an initial velocity of 300 m/s
at 59.0° above the horizontal. To clear an avalanche, it explodes
on a mountainside 41.0 s after firing. (a) What are the x
and y components of the shell where it explodes, relative
to its firing point? (b) What is the velocity of the shell
(magnitude and direction) just before explosion? (c) What was the
maximum height reached by the projectile? (d) How long did it take
for...

A projectile of mass 2.0 kg is fired in the air at an angle of
43.0° to the horizon at a speed of 44.0 m/s. At the highest point
in its flight, the projectile breaks into three parts of mass 1.0
kg, 0.7 kg, and 0.3 kg. The 1.0 kg part falls straight down after
breakup with an initial speed of 14.8 m/s, the 0.7 kg part moves in
the original forward direction, and the 0.3 kg part goes straight...

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?

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 1 minute ago

asked 19 minutes ago

asked 25 minutes ago

asked 27 minutes ago

asked 29 minutes ago

asked 32 minutes ago

asked 33 minutes ago

asked 48 minutes ago

asked 57 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago