Question

You are driving on a country road at a constant speed v0, which is above the...

  1. You are driving on a country road at a constant speed v0, which is above the speed limit. You pass a policeman behind a billboard. He turns on his lights and siren, which takes a time T, then accelerates toward you with constant acceleration a. How far beyond the billboard are you when the policeman catches up with you?
  2. This police car cannot travel at a speed greater than twice yours, that is, 2v0. Under what condition will that make any difference to the solution in part a? When it does make a difference, where are you when he catches up with you?

(in the beginning the policeman is stopped so there is no acceleration then after time T he accelerates at a constant rate. This is all that was given in the question.)

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
You're driving at speed v0 when you spot a stationary moose on the road, a distance...
You're driving at speed v0 when you spot a stationary moose on the road, a distance d ahead. Find an expression for the magnitude of the minimum constant acceleration you need if you're to stop before hitting the moose. Note: be careful when inputting the square of a variable that has a subscript. For example, the square of v0 should be entered v02 . Don't enter v20 or v02 ! Feel free to use parenthesis to make sure your answer...
You are on a county road driving at a speed of 28 m/s when you hear...
You are on a county road driving at a speed of 28 m/s when you hear the siren of an oncoming fire engine. As the fire engine approaches you, you hear the frequency of its siren as 2830 Hz, but once it has passed you the frequency becomes 1860 Hz. What is the speed of the fire engine? The speed of sound in air is 343 m/s.
A motorcycle and a car are travelling along a staright road. At t = 0 the...
A motorcycle and a car are travelling along a staright road. At t = 0 the motor cycle is behind the car by a distance of 58.0 m and both vehicles have a speed of 19.0 m/s . At a later time, t1 = 2.00 s , the motorbike begins a steady acceleration of 7.00 m/s2 and eventually passes the car at time t2 How long does it take from the moment when the motorcycle starts to accelerate until it...
1. Starting from rest, it took you 12 seconds to accelerate your car to 24 m/s...
1. Starting from rest, it took you 12 seconds to accelerate your car to 24 m/s at a constant acceleration. Find your acceleration. 2.A prototype car starts from rest and accelerates at a constant rate to 60 m/s in 5.1 seconds. How much distance did the car travel during the 5.1-second accelerated motion? 3. A speeding driver noticed a police car parked about 443 m in from of him on the side of the road and reduced his speed at...
1.If a car's speedometer indicates a constant speed of 30 miles per hour, can it be...
1.If a car's speedometer indicates a constant speed of 30 miles per hour, can it be say that the car is not accelerating? 2. Describe an example of something that has constant speed and at the same time a variable speed. Can you describe an example of something that has a constant speed and variable speed? Sustain your answers.   3.Describe an example of a body experiencing acceleration when traveling rapidly constant. Is it possible to describe an example of a...
1) You are making a circular turn in your car on a horizontal road when you hit a big patch of ice, causing the force of friction between the tires and the road to become zero. While the car is on the ice, it
1) You are making a circular turn in your car on a horizontal road when you hit a big patch of ice, causing the force of friction between the tires and the road to become zero. While the car is on the ice, itA) moves along a straight-line path away from the center of the circle.B) moves along a straight-line path toward the center of the circle.C) moves along a straight-line path in its original direction.D) continues to follow a...
You are driving toward a traffic signal when it turns yellow. Your speed is the legal...
You are driving toward a traffic signal when it turns yellow. Your speed is the legal speed limit of v0 = 55 km/h; your best deceleration rate has the magnitude a = 5.18 m/s2. Your best reaction time to begin braking is T = 0.75 s. To avoid having the front of your car enter the intersection after the light turns red, should you brake to a stop or continue to move at 55 km/h if the distance to the...
You are driving toward a traffic signal when it turns yellow. Your speed is the legal...
You are driving toward a traffic signal when it turns yellow. Your speed is the legal speed limit of v0 = 55 km/h; your best deceleration rate has the magnitude a = 5.18 m/s2. Your best reaction time to begin braking is T = 0.75 s. To avoid having the front of your car enter the intersection after the light turns red, should you brake to a stop or continue to move at 55 km/h if the distance to the...
You are in a racecar and aim for a speed contest on an L=10.0 km long...
You are in a racecar and aim for a speed contest on an L=10.0 km long race road. Your car has been optimized for efficiency and has a maximum speed of v 1 =322 km/h. a) How many seconds does it take you to drive 10.0 km at maximum speed? (3 points) b) You hear rumors that the car of an opponent has a maximum speed of v 2 =362 km/h. If you both start the race with constant maximum...
When a derivative is taken of a VECTOR quantity, then the derivative of each COMPONENT is...
When a derivative is taken of a VECTOR quantity, then the derivative of each COMPONENT is taken with respect to the same PARAMETER, i.e, d(x,y)/dt = (dx/dt,dy/dt). When objects travel on CURVED PATHS, and alternate RECTANGULAR description of the motion is the coordinates RELATIVE to the path. This has the advantage of immediately answering questions that are important to us: the TANGENTIAL component speeds up and slows down the object and the NORMAL component turns it. 1. A child rides...