physics

Cars A and B are racing each other along the same straight road in the following manner: Car A has a head start and is a distance Da beyond the starting line at t=0. The starting line is at x=0. Car A travels at a constant speed Va. Car B starts at the starting line but has a better engine than Car A, and thus Car B travels at a constant speed Vb, which is greater than Va.

A. How long after Car B started the race will Car B catch up with Car A?

B. How far from Car B's starting line will the cars be when Car B passes Car A?

  1. 👍
  2. 👎
  3. 👁
  1. When car B catches up, its' distance
    traveled will be greater than car A by
    an amount equal to Da; but their time
    on the road will be equal.

    A. da = Va*t = distance car A traveled.

    Da + da = Vb*t = distance traveled by car B,

    t = (Da + da) / Vb.

    B. Da + da = distance from car B start-
    ing line.

    1. 👍
    2. 👎
  2. 78

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    Cars A and B are racing each other along a straight path in following manner: Car A has head start and is a distance dA beyond starting line at t=0. The starting line is at x=o. Car A travels at constant speed vA. Car B starts at

  2. physics

    A banked circular highway curve is designed for traffic moving at 55 km/h. The radius of the curve is 220 m. Traffic is moving along the highway at 38 km/h on a rainy day. What is the minimum coefficient of friction between tires

  3. Physics

    Two cars travel westward along a straight highway, one at a constant velocity of 85 km/hr, and the other at a constant velocity of 115 km/hr. a) Sketch the velocity vs. time graph for both cars and paste your sketch in the space

  4. physics

    Two cars are traveling at the same constant speed v. Car A is moving along a straight section of the road, while B is rounding a circular turn. Which statement is true about the acceleration of the cars? a.) acceleration of both

  1. Physics

    Two cars are driving at the same constant speed on a straight road, with car 1 in front of car 2. Car 1 suddenly starts to brake with constant acceleration and stops in 10 m. At the instant car 1 comes to a stop, car 2 begins to

  2. Psychics

    The speed of a car traveling on a straight road increases from 63 m/s to 75 m/s in 4.2 s what is the cars acceleration ? Please help

  3. math trigonometry

    two straight roads intersect to form an angle of 75 degree. find the shortest distance from one road to a gas station on the other road 1000 m from the junction.

  4. PHY

    A drag-racing car accelerates forward because of the force exerted on it by the road. Why, then, does it need an engine? Explain. what is the answer plz

  1. english

    1. Rewrite sentences using the Passive They’re going to open the sports complex next week. The sports complex... The USA manufacture a lot of sports equipment A lot of sports equipment... They’re building some tennis courts in

  2. physics

    Cars A and B are racing each other along a straight path in following manner: Car A has head start and is a distance dA beyond starting line at t=0. The starting line is at x=o. Car A travels at constant speed vA. Car B starts at

  3. Physics

    I really cannot understand how to get to the answer. Thank you! Two cars are traveling, Car A is behind the other, on a straight road. Each has a speed of 21 m/s and the distance between them is 25 m. The driver of the rear car

  4. physics

    Cars A and B are racing each other along the same straight road in the following manner: Car A has a head start and is a distance DA beyond the starting line at t=0. The starting line is at x=0. Car A travels at a constant speed

You can view more similar questions or ask a new question.