### Average force of a truck crashing into a wall

A 3000kg truck crashes into a wall at 40km/hr and comes to a stop in 0.5 sec. What is the average force on the truck while it comes to a stop?

Explore BrainMass

- Anthropology
- Art, Music, and Creative Writing
- Biology
- Business
- Chemistry
- Computer Science
- Drama, Film, and Mass Communication
- Earth Sciences
- Economics
- Education
- Engineering
- English Language and Literature
- Gender Studies
- Health Sciences
- History
- International Development
- Languages
- Law
- Mathematics
- Philosophy
- Physics
- Political Science
- Psychology
- Religious Studies
- Social Work
- Sociology
- Statistics

A 3000kg truck crashes into a wall at 40km/hr and comes to a stop in 0.5 sec. What is the average force on the truck while it comes to a stop?

How long does it take to stop a 3X10-5kg mass moving at 2X104m/sec by applying a stopping force of 12N on this mass?

Submarine A detects sound from sub B. Given the frequency received and knowing that emitted, find the velocity of sub B. Submarine A, with velocity 21 m/sec, receives from directly behind it, the sound with frequency 266 cy/sec, from submarine B which is known to emit sound at 265 cy/sec. The two submarines are 1800 meters

The general form of the equation y(x,t) of a traveling wave is: (1) y= ym sin (k x - w t) in which w is the angular frequency. A certain wave is expressed by: (2) y= 0.15 cos (40 x - 20 t) with distances in meters and times in seconds. a. Obtain the wave speed, wavelength, amplitude, period, and frequency of this wa

See attached file. One end of a taut wire moved up and down with SHM generates a wave moving to the right along the wire. A 'primed' axis system, (x', y'), moving along with the wave, gives the x',y' coordinates of points on the wave as shown in ATTACHMENT #1. The wave's amplitude is ym', its velocity is v, and its wavelengt

Some parameters which all traveling waves have include its wavelength (lambda), period T, wave speed v, amplitude ym, etc. ATTACHMENT #1 is a diagram of a typical wave, a sine curve, with points A, B, etc. identifying various points and lengths of a wave. PART a. On ATTACHMENT #1, in the spaces shown after the parameters listed

SEE ATTACHMENT #1 for diagram showing parameters, and general equations of SHM. Driven by a spring with force constant k, on a horizontal frictionless table, two joined masses, each mass M, is executing SHM between xm and -xm. Known parameter values are: M= 2 kg, k= 64 nt/m, xm= .25 m, PART a. Find the period, and max

A construction worker on a new high-rise building drops a wrench and it falls 78.4 m to the ground. How fast is it moving when it hits, assuming no air resistance? Use g = 9.8 m/s2.

SEE ATTACHMENT #1 for diagram of before and after rearrangement. A framework consists of two thin, uniform bars of mass M= 12 kg, length L= 3 m, and two thin, uniform bars of mass m= 6 kg, length D= 3 m, forming a rectangle of length L width D. It is rotating in space with initial angular velocity Wo= 18 rad/sec. At some ins

See attached file. PART a. A small mass m is attached to one end of a rod of negligible mass. The other end of the rod is fixed so that the mass can move in a circle of radius R. A force F is applied tangent to the circle, giving the mass angular acceleration 'alpha'. SEE ATTACHMENT #1 for a diagram showing parameters. App

Bernoulli's equation determines ejection velocity of liquid from a tank. Motion equations find x,y coordinates of impact of the liquid. A large tank contains non-viscous liquid whose depth is H. A bullet punches a small hole of radius r in the vertical side of the tank at a point which is distance h below the liquid surface.

See attachment #1 for diagram. Bernoulli's equation and equation of continuity in liquid flow from large to smaller pipe A sprinkler supply pipe pumps water upward from a larger pipe, diameter d2=.28 m, to a smaller pipe, diameter d1= .12 m. The velocity of the water through the smaller pipe is v1= 6 m/sec. a. find the

The end of a string is moved up and down with a frequency of 125 vibrations/sec. If the waves produced have a velocity of 40m/sec, what is their wavelength?

Please provide me with a complete/comprehensive solution in word or in text to the attached problems.

A longitudinal wave with a frequency of 3.0 Hz takes 1.7 seconds to travel the length of a 2.5m Slinky. Determine the wavelength of the wave.

Suppose that 15 boxcars on a freight train pass by in a time of 12.0 seconds and each has a length of 14.0 m. (a) What is the frequency at which each boxcar passes? (b) What is the speed of the train?

Speakers A and B are vibrating in phase. They are directly facing each other, are 7.80 m apart, and are eack playing a 73.0-Hz tone. The speed of sound is 343 m/s. On the line between the speakers there are three points where constructive interference occurs. What are the distance of these three points from speaker A?

A marble and a cube are placed at the top of a ramp. Starting from rest at the same height, the marble rolls and the cube slides (no kinetic friction) down the ramp. Find the ratio of the center-of-mass speed of the cube to the center-of-mass speed of the marble at the bottom of the ramp.

A simple way to measure the speed of a bullet is with a ballistic pendulum. This consists of a wooden block mass, M, into which the bullet mass, m, is shot. The block is suspended from cables of length, l, and the impact of the bullet causes it to swing through a maximum angle, A. The initial speed of the bullet is v. a) How

1)a.A grind stone of 0.1m thick,1m of diameter and a relative density of 2.53 find-moment of inertia+ radius of gyration. b)A gun is fired at a target 12km away at an angle of 35deg and hits target.How long is the projectile in the air and what's it's velocity? need complete step by step answer,thanks..

The position of a particle moving on an x axis is given by: x=7.8 + 9.2t - 2.1t^3 with x in meters and t in seconds. What is its velocity at t=3.5s? Is velocity constant or changing?

Relative Velocity Problem Consider a boat on the West bank of a river of width D=1664 meters to be at the origin of an x,y axis system with the 0° direction East along the +x axis. The river water runs South with velocity vector W= 3.9 m/sec at 270°. At coordinates (1200, -390) is a dock on an island. At coordinates (16

A 2100.00 kg car moving at 27.50 m/s hits an initially uncompressed horizontal spring with spring constant of 1.60à?10^6 N/m. What is the maximum compression of the spring? (Neglect the mass of the spring)

Show all steps in computation. 1) A VW RAbbit can go from rest to 80.5 km/h (50.0 mi/h) in a modest 8.20 s. How long will it take to speed from 48.3 km/h to 64.4 km/h, along a straight run, if the average acceleration is the same as before? 2)During a takeoff a small plane has an average tangential acceleration of 5.0 m/s^2

Assume blood flow down a long tube may be thought of as the flow of two immiscible fluids, one in the core of the tube (modeled as normal whole blood) and the other as a cell-free layer near the wall (modeled as plasma). Assume the cell-free layer has a thickness x, the tube has a radius R, the blood viscosity is u_b and the pla

A 5 kg bowling ball is rolled back to the bowler over a ramp system. If the ball is given an initial velocity of 0.6 m/s at its starting point's height which is 100 cm, what is the balls velocity at its ending point at 40 cm, after going over a height of 45cm first? So the ball leaves the first position goes through a dip up to

The velocity of a particle moving in a straight line is given by v=3t^2 + 2t, Find an expression for the displacement at time, t. If the initial displacement is 1m, find an expression for the constant of integration. Hence determine the displacement after a time period of 2s has elapsed.

A bullet fired horizontally is aiming at an object which starts falling at the instant the bullet is fired. Will the bullet hit the object ?

Questions are taken from the course book 'Physics with modern physics', Richard Wolfson & J. M. Pasachoff. A model rocket is launched straight upward; its altitude as a function of time is given by y = bt-ct^2, where b=68 m/s, c=4.9 m/s, t is the time in seconds, and y is in meters. (a) Use differentiation to find a ge

Taking Earth's orbit to be a circle of radius , determine the speed of Earth's orbital motion in meters per second.