How many seconds did you need to stop the car

Assignment Help Physics
Reference no: EM13646846

you are driving at a speed of 20 m/s. suddenly you see a deer 100m in front of the car and hit the brakes immediately. you are just able to save the deer. (a) calculate the acceleration. (b) how many seconds did you need to stop the car?

Reference no: EM13646846

Questions Cloud

Magnetic fields deflectmoving charges : The magnetic force isalways perpendicular to both the magnetic field and the velocity ofthe charge. Magnetic fields don't doany work on charges. Magnetic fields arecreated by moving charges. Magnetic fields deflectmoving charges.
How much work is done on the toboggan by the tension force : A person pulls a toboggan for a distance of 28.5 m along the snowwith a rope directed 27.4 ° above the snow. The tension in therope is 98.1 N. (a) How much work is done on the toboggan by the tension force? (b) How much workis done if the same ten..
Determine work doneby the elevator in lifting problem : You are moving into an apartment and take the elevator to the 6th floor. Suppose your weight is 630 N and that of yourbelongings is 970 N. (a) Determine the work doneby the elevator in lifting you and your belongings up to the 6thfloor (15.2 m) at ..
One cylinder in diesel engine of truck has initial volume : One cylinder in the diesel engine of a truck has an initial volume of 600cm^3. air is admitted into the cylinder at 30 degrees C and a pressure of 1.0 atm. the piston rod then does 400J of work to rapidly compress the air. what are its final temperat..
How many seconds did you need to stop the car : you are driving at a speed of 20 m/s. suddenly you see a deer 100m in front of the car and hit the brakes immediately. you are just able to save the deer. (a) calculate the acceleration. (b) how many seconds did you need to stop the car?
Girl is bouncing on a trampoline : A 33-kg girl is bouncing on a trampoline. During a certaininterval after leaving the surface of the trampoline, her kineticenergy decreases to 190 J from 450 J. How high does she rise during this interval?
What angular velocity in rpm-does the string tilt down ata : A student ties a 500 g rock to a 1.0-m-long string and swings it around her head in a horizontal circle. At what angular velocity, in rpm, does the string tilt down ata 10^\circ angle?
An asteroid is moving along a straight line : An asteroid is moving along a straight line. A force acts alongthe displacement of the asteroid and slows it down. The asteroidhas a mass of 5.0×104 kg, and theforce causes its speed to change from 7800 to 4500m/s.
The aid of its own engines and a steam-powered catapult : A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of itsengines is 3.90 x 105 N. In being launched from rest itmoves through a distance of 72.8 m and has a kinetic energy of ..

Reviews

Write a Review

Physics Questions & Answers

  Find the magnitude and direction of the second displacement

A man pushing a mop across a floor causes it to undergo two displacements. Find the magnitude and direction of the second displacement

  Estimate the angular acceleration of each wheel

A person is riding a bicycle, the wheels of a bicycle have an angular velocity of +20.5 rad/s. Then, the brakes are applied. In coming to rest, What is the angular acceleration of each wheel

  What is the magnitude of the force of gravity on your ship

You are on a spaceship that has discovered a giant artifact made by an alien civilization. what is the magnitude of the force of gravity on your ship from the semi-circle

  Find the rms value of the electric field of transmitted beam

A beam of polarized light has an average intensity of 15 W/m^2and is sent through a polarizer. find the rms value of the electric field of the transmitted beam

  Find how far will it travel in so doing

Suppose a rocket ship in deep space moves with constant acceleration equal to 9.80 m/s2, which gives the illusion of normal gravity during the flight. How far will it travel in so doing

  What is the initial charge on the capacitor

A capacitor of 12µF is charged by a 30 V battery. Afterwards, the capacitor is disconnected from the battery and connected to an inductor with L = 2H. What is the initial charge on the capacitor

  The beam contains two wavelengths 4500 nm and 7000 nm for

a light beam strikes a piece of glass at a 50.00 degree incident angle. the beam contains two wavelengths 450.0 nm and

  At what angle are the second order maxima found

How many rulings must a 4.22-cm-wide diffraction grating have to resolve the wavelengths 415.544, At what angle are the second order maxima found

  What type of lens is it

A certain lens focuses light from an object 1.25maway as an image 41.8cm on the other side of the lens. What type of lens is it

  Find the heat required to melt the bullet

A 2.50 g lead bullet traveling at 560 m/s strikes a target, converting its kinetic energy into thermal energy. It's initial temperature is 40.0°C. Find the heat required to melt the bullet

  What is the temperature of the thermometer

You just calibrated a constant volume gas thermometer. What is the temperature of the thermometer, when it reads a pressure of 480 kPa

  Calcuclate electronic contribution to molar heat capacity

The NO molecule has a doubly degenerate electronic ground state and a doubly degenerate excited state at 121.1 cm^-1. Calcuclate the electronic contribution to the molar heat capacity of the molecule up to 500K.

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