What is the maximum reaction time of the motorist

Assignment Help Physics
Reference no: EM1322187

Q1. A motorist travelling at 15 m/s encounters a deer in the road 43.0 m ahead.

If the maximum acceleration vehicle's brakes are capable of is -6 m/s2, what is the maximum reaction time of the motorist that would allow her or him to avoid hitting the deer?

Answer in units of s.

Q2. A particle has an acceleration of 6.39 for 0.28. At the end of this time the particle's velocity is 9.31 .What was the particle's initial velocity?

Reference no: EM1322187

Questions Cloud

Iced tea is made by adding ice to : Iced tea is made by adding ice to 2.4 kg of hot tea, initially at 70?C. How many kg of ice, initially at 0?C, are required to bring the mixture to 10?C? (Lf = 3.33×105 J/kg, cw = 4,186 J/kg•? C)
If the time for an electron to stop is on the order : A stockroom worker pushes a box with a mass 11.2kg on a horizontal surface with a constant speed of 3.50m/s. coefficient of kinetic friction between the box and the surface is 0.20.
The speed of the stone just before it hits the ground : A car travelling at 23 m/s runs out of gas while travelling up a 20 degree slope. How far up the hill will it coast before starting to roll back down.
When the apple is attached to the tree : Does an apple tree exert a gravitational force on the earth and if so, how large of a force? Consider and explain this question when the apple is attached to the tree, and when it is falling.
What is the maximum reaction time of the motorist : A particle has an acceleration of 6.39 for 0.28. At the end of this time the particle's velocity is 9.31 .What was the particle's initial velocity.
Find the total energy of the circuit : The time-varying current in an LC circuit where C = 11.5?F is given by i(t) = (1.30 A) sin (1230t), where t is in seconds.
Find out the values of a and k when value of this expression : A plane flies from base camp to Lake A, 280 km away in the direction 20° north of east. After dropping off supplies it flies to Lake B that is 190 km at 30° west of north from Lake A. Graphically find out the distance and direction from Lake B to ..
Resolve how long the train blocked the crossing : Two stationary positive point charges, charge 1 of magnitude 3.25 nC and charge 2 of magnitude 1.9nC, are separated by the distance of 60 cm. An electron is released from rest at the point midway between the two charges, and it moves along the lin..
Calculate the maximum current in the inductor : A 2.30-? F capacitor is fully charged by being connected to a 6.0-V battery. The fully charged capacitor is then connected to a 0.250-H inductor.

Reviews

Write a Review

Physics Questions & Answers

  What is the stopping distance

A lighthouse that rises 49 above the surface of water sits on a rocky cliff that extends 19 from its base. A sailor on the deck of a ship sights the top of the lighthouse at the angle of 30.0 above the horizontal.

  What was the magnitude of its deceleration

A 27 pound meteorite struck a car, leaving a dent 21 cm deep in the trunk. If the meteorite struck the car with a speed of 500 m/s, what was the magnitude of its deceleration, assuming it to be constant.

  What is the magnitude of betty''s force

A plane leaves the airport in Galisto and flies 175 km at 68.0^circ east of north and next changes direction to fly 260 km at 48.0^circ south of east, after which it makes an immediate emergency landing in the pasture.

  What are vertical and horizontal components of the ball

What are vertical and horizontal components of the ball's momentum immediately after striking the crossbar. what is an average acceleration of the ball during this time interval.

  Suitcase drops out of the luggage compartment

A canoe has a velocity of 0.54m/s southeast relative to the earth. The canoe is on a river that is flowing at 0.52m/s east relative to earth.

  What is the magnitude of the other force

Throughout a hard sneeze, your eyes may shut for 0.41 s. If you are driving a car at 98 km/h during such a sneeze, how far does the car move during that time.

  Compute the numerical value for acceleration

Compute the numerical value for acceleration

  Find the work he did in pushing forward on his wheels

How many J of energy must be removed when 156 g of steam, at a temperature of 175.0 °C, is cooled and frozen into 156 g of ice at 0 °C.

  What is the time of oscillation of block

What is the time of oscillation of block

  Determine the post fault currents between all buses

Determine the post fault currents between all buses and from the generators.

  Calculate the acceleration of the counterweight

A rifle fires a 2.39 10-2-kg pellet straight upward, since the pellet rests on a compressed spring that is released when the trigger is pulled. The spring has a negligible mass and is compressed by 9.17 10-2 m from its unstrained length. The pellet r..

  What was an initial speed of the ball

What was an initial speed of the ball

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