Question

A bullet travels down a rifle barrel with a velocity that depends on time:

v = 2*10^{5} t
- 6*10^{7} t^{2}

The acceleration is not constant.

What is the acceleration as a function of time?

What is the position as a fuction of time?

How long does it take for the bullet to leave the barrel in seconds?

Find the speed at which the bullet leaves the barrel in meters/second.

Answer #1

A 10-g bullet leaves a rifle barrel with a velocity of 600 m/s
to the east. If the barrel is 1 m long, the bullet accelerates
inside with constant acceleration and the gun has a mass of 4 kg,
what is: a) the recoil velocity of the rifle? b) the force exerted
on the bullet? c) the time during which the bullet was accelerated?
d) the impulse supplied to the bullet?

4. A rifle is aimed horizontally at a target 50 m away. The
bullet hits 1.25 m below the target. (a) What was the bullet’s
flight time? (b) What was the bullet’s speed as it left the
barrel?
5. A 1000-kg car traveling at a speed of 40 m/s skids to a halt
on wet concrete where µk = 0.8. How long are the skid marks?
9. A curve at a racetrack has a radius of 100 m and is...

The final velocity v of an object is given by the
formula v=u+a∙t , where u is the initial
velocity, a is the acceleration and t is the
elapsed time. (use python language to write a program with comments
to perform the required tasks)
Calculate and print the final velocity of an object with
initial velocity of 15 m/s and acceleration of 2.5 m/s2
after t = 18 seconds.
If an object starts from rest, how long will it take...

A sinusoidal wave travels down a long string. The y displacement
of the string is given at right, as a function of both x position
along the string and time t. Positions x and y are measured in
meters, t is in seconds. Find the wavelength, frequency, and period
of this waveform. y(x, t)=ysin(36.9t+2.43x)
If x is to the right, what direction is this wave traveling?
At time t = 0.0165 s, and a position x = 0.913 m, what...

1-The velocity of a particle is v = { 6 i + (
28 - 2 t ) j } m/s, where t is in seconds. If r=0
when t=0, determine particle displacement during time interval t =
3 s to t = 8 s in the y direction.
2-A particle, originally at rest and located at point (1 ft, 4
ft, 5 ft), is subjected to an acceleration of a={ 3 t
i + 17 t2k} ft/s.
Determine magnitude...

A 14.00 kg particle starts from the origin at time zero. Its
velocity as a function of time is given by v with arrow = 9t2î +
4tĵ where v with arrow is in meters per second and t is in seconds.
(Use the following as necessary: t.)
(a) Find its position as a function of time.
r =________
(c) Find its acceleration as a function of time.
a=_______m/s^2 (
(d) Find the net force exerted on the particle as...

starting from rest, a car acceleration
at a rate of 4 m/s2for 3 seconds. The car then travels
at a constant speed for 5 seconds. What is the total distance moved
by the car?
what is the angle between the two vectors
from the line 1 column 49 to line 1 column 73. Unexpected
‘<mstyle and from line 1 column 56 to line 1 column 95.
Unexpected ‘<mi; ?
The velocity of a particle as a function time along the...

A 3.00-kg particle starts from the origin at time zero. Its
velocity as a function of time is given by v = (3t^2) i+ (2t) j
where v is in meters per second and t is in seconds.
(a) Find its position at t = 1s.
(b) What is its acceleration at t = 1s ?
(c) What is the net force exerted on the particle at t = 1s
?
(d) What is the net torque about the origin...

(1A) A transverse sinusoidal wave travels along a string with a
constant speed 10 m/s. The acceleration of a small lump of mass on
the string (a) varies sinusoidally in time in a direction
perpendicular to the string, (b) varies sinusoidally in time in a
direction parallel to the string, (c) is 10 m/s 2 , (d) is
zero.
(1B) In a periodic transverse wave on a string the value of the
wave speed depends on (a) amplitude, (b) wavelength,...

If a ping-pong ball is ejected horizontally from a bazooka at
a constant velocity of 232 m/s towards a soda can sitting 1000 cm
away, how much time does it take for the ball to collide with the
can? = 0.0431s
The ping-pong ball from the previous problem strikes the can
and continues through with a lower velocity of 112 m/s. A second
soda can lie in wait some distance further down range. If the ball
travels for another 0.201...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 10 minutes ago

asked 11 minutes ago

asked 18 minutes ago

asked 18 minutes ago

asked 19 minutes ago

asked 28 minutes ago

asked 39 minutes ago

asked 56 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago