physics

A driver in a car traveling at a speed of
41.7 mi/h sees a deer 88 m away on the road.
Calculate the magnitude of the acceleration
necessary for the car to stop just barely miss-
ing the deer (assuming that the deer does not
move in the meantime).
Answer in units of m/s2

  1. 👍 0
  2. 👎 0
  3. 👁 523
  1. Use SI units to make things easier.
    Vo = 41.7 mph = 41.7*1609/3600 = 18.64 m/s

    Vo = sqrt(2 a X)
    X = 88 m
    Solve for the reuired acceelration, a.

    a = Vo^2/(2 X)= 1.97 m/s^2

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics Part A HELP!!

    4.) In coming to a stop, a car leaves skid marks 80m long on the highway. Assuming a DEceleration of 7.00 m/s^2 (m/s/s), estimate the speed of the car just before breaking. 6.) A car traveling @ 90km/h strikes a tree. The front

  2. physics

    A driver in a car traveling at a speed of 60 mi/h sees a deer 100 m away on the road. Calculate the minimum constant acceleration that is necessary for the car to stop without hitting the deer (assuming that the deer does no move

  3. PHYSICS

    A car traveling 95 km/h strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.80 m . What was the magnitude of the average acceleration of the driver during the collision? Express the

  4. physics

    a car is traveling 20.0 m/s when the driver sees a child standing in the road. he takes 0.80 seconds to react, then steps on the brakes and slows at -7.0 m/s squared. how far does the car go before it stops?

  1. Science

    #1. Kilometers per hour describes the speed of an object. ture false **** #2. Which of the following reference points would allow you to observe the speed of a car that you are traveling in? a) an airplane flying across the sky b)

  2. Physics

    The speed limit in a school zone is 40km/h. A driver traveling at this speed sees a child run into the road 13m ahead of his car. He applies the breaks, and the car decelerates at uniform rate of 0.8m/s². If the driver's reaction

  3. physics

    A car is traveling 20 m/s when the driver sees a child standing on the road. He takes 0.8 s to react, then steps on the brakes and slows at 7.0 m/s2. How far does the car go before it stops?

  4. please help! physics

    A 1200 kg car is moving at 95 km/h when the driver notices a deer down the road. He immediately moves his foot toward the brake pedal, taking only 0.50 seconds before the car starts slowing down. The brakes cause a net force of

  1. Physics

    A car is being driven along a country road on a dark and rainy night at a speed of 20 m/s. The section of road is horizontal and straight. The driver sees that a tree has fallen and covered the road ahead. Panicking, the driver

  2. physics

    The driver of a car, traveling at a constant 25 m/s, sees a child suddenly run into the road. It takes the driver 0.45s to hit the brakes. As it slows, the car has a steady acceleration of 8.5 m/s^2. What's the total distance the

  3. physics

    A car is traveling 15 m/s when the driver sees a child standing on the road. He takes 0.8 s to react, then steps on the brakes and slows at 8.0 m/s2. How far does the car go before it stops?

  4. Physics

    A car traveling at 20m/s when the driver sees a child standing in the road. He takes 0.80s to react, then steps on the brakes and slows at 7.0m/s^2. How far does the car go before it stops?

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