Red light in the distance problem

Assignment Help Physics
Reference no: EM13681772

A driver is traveling at 72 km/hr when she sees a red light in the distance. She keeps traveling at this speed for two seconds, and then applies the brakes, decelerating the car to a stop at a rate of -5 m/s2.

1. Convert the driver's initial speed into units of m/s.

2. Compute her total stopping time, measured from the point where she first notices the red light.

3. Calculate her total stopping distance, gauged from the point where she first notices the red light.

4. Compute her average speed, measured from the point where she first notices the red light to the point when her car comes to a stop.

Reference no: EM13681772

Questions Cloud

How much energy is required to place four positive charges : How much energy is required to place four positive charges, each of magnitude +5.0 mc, at the vertices of a square of side 2.5 cm? Choose one way of assembling the charges and com1pute the potential at each empty vertex as this set of charges is asse..
What is the individual capacitance of each capacitor : Two capacitors connected in parallel produce an equivalent capacitance of 45.0F however when connected in series the equivalent capacitance is only 4.2F. What is the individual capacitance of each capacitor?
What will the speed of the car be if there is no friction : A 1210 kg car is driving on 60 km/h on an inclined plane. The car is located on the top of the plane. The plane is 655 m long and the angle is 4.50 degrees. What will the speed of the car be if there is no friction?
Crate is initially moving with a velocity that has magnitude : A 29.0kg crate is initially moving with a velocity that has magnitude 4.08m/s in a direction 37.0 west of north. How much work should be done on the crate to change its velocity to 5.82m/sin a direction 63.0 south of east?
Red light in the distance problem : A driver is traveling at 72 km/hr when she sees a red light in the distance. She keeps traveling at this speed for two seconds, and then applies the brakes, decelerating the car to a stop at a rate of -5 m/s2. Compute her total stopping time, measure..
How much time it takes for ball to reach plan of the fence : A soccer ball is at rest on the ground 32 m away from a fence. A boy kicks the ball towards the fence w/ a velocity of 20 m/s at 37 degrees above ground level. The fence is 2.5 m high. Decide how much time it takes for the ball to reach the plane of ..
A bullet is fired horizontally from a gun : A bullet is fired horizontally from a gun. At the exact instant the trigger is pulled, a ball is released from the exact same height as the gun and allowed to fall to the ground. Which projectile hits the ground first, or do they hit at the same time..
What is the resistivity of the wire : When a potential dissimilarity of 12 V is applied to a wire 8.3 m long and 0.30 mm in diameter the result is an electric current of 1.8 A. What is the resistivity of the wire?
Determine what is the value of the capacitor : A capacitor is fully charged using a battery with Vemf = 153.7 V. The battery is disconnected and a resistor with R = 697.9 ohm is connected across the capacitor. The current flowing in the resistor after 5.391 s is 1.033*10-1 A. Determine what is th..

Reviews

Write a Review

Physics Questions & Answers

  Find the magnitude and direction of the electric field

A straight, nonconducting plastic wire 8.50 cm long carries a charge density of +175 nC/m distributed uniformly along its length, Find the magnitude and direction of the electric field

  What frequency will the current be maximum

A 11.1 Ω resistor,a 9.2 µF capacitor, anda 29.7 mH inductor are connectedin series with a 120 V (rms) source with variable frequency. At what frequency will the current be maximum? Find the maximum rms current.

  Determine the smallest number of whole logs

Determine the smallest number of whole logs (p = 730 kg/m3, radius = 0.0750 meter, length = 2.91 meter) that can be used to build a raft that will carry four people

  Calculate the values of the three charges

Why three points? Would two have been enough? Describe what changes would occur, if any, in the electric field pattern and in the equipotential curve you measured if the magnitudes of your three charges were increased, all by the same factor.

  Obtain the work done by the normal force exerted by table

A block of mass 2.50 kilogram is pushed 2.40 meter along a frictionless horizontal table by a constant 16.0 Newton force directed 25.0 degree below the horizontal. Find the work done by the normal force exerted by the table

  A point charge q1 -500 nc is at the point x1 meters y2

a point charge q1 -5.00 nc is at the point x1 meters y2 meters. a point charge q210 nc is at the point x 2 meters y0.a

  Compute the average power loss

A series RLC circuit consists of a 90Ohm resistor, a 0.20H inductor, and a 105mF capacitor. It is attached to a 120V/60Hz Power line. compute the average power loss

  In astronomy it is common to expose a photographic plate to

in astronomy it is common to expose a photographic plate to a particular portion of the night sky for quite some time

  Find the potential energy in the spring

A force of 720 Newton stretches a certain spring a distance of 0.150 meter. Find the potential energy in the spring when a 60.0 kilogram mass hangs vertically from it? (Ignore the mass of the spring)

  What is the change in the potential energy of the box

A 25-kg box slides, from rest, down a 9.0-m-long incline that makes an angle of 15° with the horizontal. What is the change in the potential energy of the box

  In a typical photon experiment the photon

In a typical photon experiment the photon is depicted as moving across the page, say from right to left. Assume we were actually able to witness such an experiment, from the side (to position of reader to a page)

  How much energy does this wave carry through the window

The electromagnetic wave that delivers a cellular phone call to acar has a magnetic field with an rms value of 1.38E-10 T. The wavepasses perpendicularly through an open window, the area of which is0.244 m2.

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