What is its emergency deceleration

Assignment Help Physics
Reference no: EM13524675

(a) A light-rail commuter train accelerates at a rate of 1.15 m/s2. How long does it take it to reach its top speed of 80.0 km/h starting from rest?

s

(b) The same train ordinarily decelerates at a rate of 1.55 m/s2. How long does it take to come to a stop from its top speed?

s

(c) In emergencies the train can decelerate more rapidly, coming to rest from 80.0 km/h in 8.30 s. What is its emergency deceleration in m/s2?

m/s2

Reference no: EM13524675

Questions Cloud

Lockes theory of how we come to knowledge : What problems would Kant have with Locke’s theory of how we come to knowledge, and why,bringing in specific theories and ideas from Kant and Locke, explain how and why Locke would be in need of further investigation – or “critique” – according to Kan..
Define hcl reacts with excess calcium carbonate : How much energy is liberated at constant pressure if .0894g of HCl reacts with excess calcium carbonate
Calculate the electric flux through the surface of the box : Charges of 3.0 nC, -2.0 nC, -7.0 nC, and 1.0 nC are contained inside a rectangular box with length 1.0 m, width 2.0 m, What is the electric flux through the surface of the box
Algernon whether algernons taking professor bubaczs class : What issue is the speaker using to take a position in the following situation? Sure, some of the hotdoggers get good grades in Professor Bubacz's class. But my guess is that, if Algernon takes it, all it'll get him is flunked out.
What is its emergency deceleration : In emergencies the train can decelerate more rapidly, coming to rest from 80.0 km/h in 8.30 s. What is its emergency deceleration in m/s2
Define what protonated the amine before the amine protonates : We mixed ortho vanillin with carbethoxymethylene triphenyphosphorane. I would like to know how the imide was created in the first step. What protonated the amine before the amine protonates the carbonyl
Find the angle theta : A dive bomber has a velocity of 230 m/s at an angle theta below the horizontal. When the altitude of the aircraft is 2.15 km, it releases a bomb, Find the angle theta
Explain the coefficient of sn in the balanced equation : Complete and balance the following redox equation using the smallest whole-number coefficients. What is the coefficient of Sn in the balanced equation
Idiom-analogy-metaphor-simile-cliche-amphiboly : Define the meaning and function of each term: Idiom, Analogy, Metaphor, Simile, Cliche, Amphiboly, Flame word, Hyperbole, Euphemism, Colloquialism

Reviews

Write a Review

Physics Questions & Answers

  Determine out the greatest possible angular speed

Determine out the greatest possible angular speed it can have for the matter at the surface of the star on its equator to be just held in orbit by the gravitational force.

  Compute how much water did the blacksmith trickle over iron

A blacksmith cools a 1.30-kg chunk of iron, initially at a temperature of 650.0?C, by trickling 15.0?C water over it. How much water did the blacksmith trickle over the iron

  At what distance is the sound level exactly half

The sound level measured 5.2 m away from a jet engine is 140 dB. At what distance is the sound level exactly half

  Find the final steady-state or equilibrium current

a coil has an inductance of l=0.65mh and resistance of r=0.75 ohms . it is connected to the terminals of a battery with a emf of 1.5V, find the final steady-state or equilibrium current

  What is the electrons energy in given state

What quantum number of the hydrogen atom comes closest to giving a 500-nm-diameter electron orbit, What is the electron's energy in this state

  What is the time-averaged power delivered to the speaker

An audio amplifier, represented by the AC source and the resistor R, what is the time-averaged power delivered to the speaker

  How far does it travel in the next second

A small block is released from rest at the top of a frictionless incline. The block travels a distance 0.263 m in the first second after it is released

  Find the amplitude & period of oscillations

According to the law x =a sin2(wt - pi/4), a point moves along the x axis, Find the amplitude & period of oscillations

  Estimate the average velocity for the entire trip

Bacteria vary somewhat in size, but a diameter of 2.0 nanometers is not unusual. What would be (a) volume (in cubic centimeters) and (b) surface area (in square millimeters) of such a bacterium, assuming that it is spherical.

  Calculate the amount of heat loss though a glass window

Calculate the amount of heat loss though a glass window made of a single pane of glass 0.100 in. thick, if the temperature inside the room is 70F and outside is 32 F

  Determine the distance between the two girls

Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 20.0 m/s at an angle 49.0 degrees, What is the distance between the two girls

  Find how fast will the survival pack be moving

On an exo-planet, a 70-kg astronaut steps on a scale and finds that the scale reads 246 N. A survival pack is dropped a distance 85 m to the ground. How fast will the survival pack be moving just before it hits the ground

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd