What is the minimum time needed before it can come

Assignment Help Physics
Reference no: EM1322234

Q1. A jet plane lands with a speed of 102m/s and can accelerate at a maximum rate of 4.80 m/s2 as it comes to rest.
From an instant the plane touches the runway, what is the minimum time needed before it can come to rest?

Q2. A car is behind a truck going 25m/s on the highway. The car's driver looks for an opportunity to pass, guessing that his car can accelerate at 1.0m/s2. He gauges that he has to cover the 20-m length of the truck, plus 10m clear room at the rear of the truck and 10m more at the front of it. In the coming lane, he sees a car approaching, probably also travelling at 25m/s. he estimates that the car is about 400m away. Must he attempt the pass? Give Details.

Reference no: EM1322234

Questions Cloud

What is the charge on the sphere : What is the electric field strength at midpoint between two disks.What is the electric field strength a point on axis 5.0 cm from one disk between them.
The gravitational force between two masses : The gravitational force between two masses M and m separated by a distance r is 40 N. What is the new force when this distance is halved?
At the instant she contacts the water her speed : At what angle have to the laser beam in the diagram be aimed at mirrored ceiling in order to hit the midpoint of the far wall? The length of the room is a=4.9 m and its height is b=3.00 m.
What frequency will the force make the object vibrate : A person driving her car at 49 km/h approaches an intersection just as the traffic light turns yellow. She knows that the yellow light lasts only 2.0 s before turning to red, and she is 30 m away from the near side of the intersection .
What is the minimum time needed before it can come : A car is behind a truck going 25m/s on the highway. The car's driver looks for an opportunity to pass, guessing that his car can accelerate at 1.0m/s2. He gauges that he has to cover the 20-m length of the truck, plus 10m clear room at the rear of..
A stone is thrown vertically upward with an initial : A stone is thrown upward with an initial speed of 20 m/s. What is its acceleration at the highest point of its trajectory?
How far is your hometown from school : A helicopter is ascending vertically with a speed of 5.02m/s. At a height of 140m above the Earth, a package is dropped from the window. How much time does it take for the package to reach ground.
What is the time needed to take off : The cubit is an ancient unit. Its length equals six palms. (A palm varies from 2.50 to 3.50 inches depending on the individual.) We are told Noah's ark was 300 cubits long, 50 cubits wide and 30 cubits high.
A roofer accidentally drops a bundle of shingles : A roofer accidently drops a bundle of shingles. If it hits the ground with a speed of 86 m/s, how fast was it moving 3 seconds earlier (g=10 m/s/s)

Reviews

Write a Review

Physics Questions & Answers

  The position of an object in front of a screen

Find the position of an object in front of a screen to obtain an image of size twice larger than its original size on the screen.

  The magnitude of the charge on an electron

If a metal wire carries a current of 23.0 mA, how long does it take for 12.0×1020 electrons to pass a given cross-sectional area anywhere along the wire? The magnitude of the charge on an electron is 1.6 × 10-19 C.

  What is the magnitude of the train''s angular acceleration

If a car travelling at 52 km/h will skid 18 m when its brakes lock, how far-off will it skid if it is travelling at 120 km/h when its brakes lock.

  Estimate the velocity of third piece that explodes at rest

An object at rest explodes into three pieces of equal masses. One moves east at 23 m/s,  while the second piece moves northwest at 14 m/s. Estimate the velocity of the third piece? Suppose each piece has a mass of 2 kg.

  What would be the magnitude of acceleration

A lightweight string of length 60cm is attached to the ceiling at points separated by distance. Three objects of equal mass are hung from the string, separating the string into 4 equal segments of length L. If θ = 40, find the measure of angle φ a..

  Assume that the trampoline obeys hooke''s law

How long does it take for the grinding wheel to stop ? Through how many radians has the wheel turned during the interval found in.

  The pilot of an aircraft wishes to fly due west

An observer on the ground watches the boy throw the can and catch it. In this observer's ground frame of reference, explain the shape of can's path and determine the initial velocity of the can.

  Extimate the thickness of the glass at fifth bright fringe

Extimate the thickness of a glass at a bright fringe and the Brewster's angle for light traveling from air to glass.

  What is the total flux

What is the total flux

  What is the tension in cables

A 0.27 kg rock is thrown perpendicularly upward from the top of the cliff that is 32 m high. When it hits the ground at the base of cliff, the rock has a speed of 29 m/s. suppose that air resistance can be ignored, find out A) initial speed of the ro..

  Find electric field between them and surface charge density

What value of capacitance will ensure that an output voltage stays within 3 percent of the rated 22v . find an electric field between them and surface charge density on the plate.

  What force does she exert on the floor of elevator

orville walks 318 m due east. He then continues walking along the straight line, but in a different direction, and stops 164 m northeast of his starting point. How far did he walk during the second portion of trip and in what direction.

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