What is the cars original speed before braking

Assignment Help Physics
Reference no: EM13677875

A driver in a moving car applies the brakes. The car slows to a final speed of 1.80 m/s over a distance of 40.0 m and a time interval of 8.30 s. The acceleration while braking is approximately constant.

1. What is the car's original speed before braking?

2. What is its acceleration during this time? (The car's initial velocity is in the positive direction. Indicate the direction with the sign of your answer.)

Reference no: EM13677875

Questions Cloud

What is the distance of the fly from the corner of the room : A certain corner of a room is selected as the origin of a rectangular coordinate system. If a fly is crawling on an adjacent wall at a point having coordinates (2.0, 1.0), where the units are meters, what is the distance of the fly from the corner of..
Decide the electric potential energy for the array : Decide the electric potential energy for the array of three charges in the drawing, relative to its value when the charges are infinitely far away and infinitely far apart.
A brick is thrown upward from the top of a building : A brick is thrown upward from the top of a building at an angle of 40° to the horizontal and with an initial speed of 14 m/s. If the brick is in flight for 3.5 s, how tall is the building?
What minimum constant acceleration in the x-direction : Presume a rocket-propelled motorcycle is fired from rest horizontally across a canyon 1.10 km wide. What minimum constant acceleration in the x-direction should be provided by the engines so the cycle crosses safely if the opposite side is 0.760 km l..
What is the cars original speed before braking : A driver in a moving car applies the brakes. The car slows to a final speed of 1.80 m/s over a distance of 40.0 m and a time interval of 8.30 s. The acceleration while braking is approximately constant. What is the car's original speed before braking..
Find out the empirical formula of the carboxylic acid : A 0.3000 g sample of carboxylic acid is burned in oxygen producing 0.5349 g of CO2 and 0.2202 g of H20. Find out the empirical formula of the carboxylic acid.
Explain organic spectroscopy use electromagnetic radiation : Several types of organic spectroscopy use electromagnetic radiation, several types of which are listed below. Which kind is the highest in energy
Compute the work that must be done against the atmosphere : Compute the work that must be done against the atmosphere for the expansion of the gaseous products in the combustion of 1.00 mol C6H6 (l) at 25 degrees Celsius and 1.00 bar.
Rank from highest to lowest relative ion compounds : Derived from ion charges and relative ion sizes rank these ionic compounds by their expected melting points. Rank from highest to lowest.

Reviews

Write a Review

Physics Questions & Answers

  Evaluate how far should you go to reach the treasure

The treasure map in the figure gives the following directions to the buried treasure: "Start at the old oak tree, walk due north for 460 paces, then due east for 130 paces. How far should you go to reach the treasure

  Find how much power does this force deliver to the object

A 20-N horizontal force pushes an object along a rough floor so that the object moves with a constant velocity of 7.0 m/s

  What is the coefficient of friction for the tire

Suppose that the net horizontal force is because of rolling friction only and take the free-fall acceleration to be g = 9.80 m/s^2. What is the coefficient of friction for the tire under low pressure.

  Determine the tangential and centripetal components of the

determine the tangential and centripetal components of the net force exerted on a car by the ground when its speed is

  How large a force must be applied to the input piston

The load-bearing piston in a certain hydraulic system has an area 49 times as large as the input piston. how large a force must be applied to the input piston

  How much energy is dissipated as thermal energy in the wire

A wire of resistance 5.4 ? is connected to a battery whose emf ? is 2.0 V and whose internal resistance is 1.0 ?. In 1.8 min, how much energy is dissipated as thermal energy in the wire

  What is the amplitude of the subsequent oscillation

A 750 air-track glider attached to a spring with spring constant 10.5 is sitting at rest on a frictionless air track. A 475 glider is pushed toward it from the far end of the track at a speed of 118 .

  What is the frequency of the echo

Your car horn happens to have the unusual property of emitting a pure tone at a frequency of 640. Hz. What is the frequency of the echo

  Estimate the horizontal component of the force

A uniform metal rod, with a mass of2.9kg and a length of0.9m, is attached to a wall by a hinge at its base. Find the horizontal component of the force exerted on the rod by the hinge

  What mass of air must be pushed downward

A helicopter stays aloft by pushing large quantities of air downward every second. What mass of air must be pushed downward

  Vertical component of the initial velocity of the arrow

An arrow is shot with a speed of 18.5 m/s at an angle of 50 degrees from the horizontal. What are the respective horizontal and vertical component of the initial velocity of the arrow?

  Obtain with what speed does the bucket strike the water

A 15.0 kg bucket of water is suspended by a ropewrapped around a windless, that is a solid cylinder 0.500 m indiameter with mass 11.0 kg. With what speed does the bucket strike the water

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