posted by .

A car increases its velocity from 12 miles per hour to 50 miles per hour in .3 hours. what was the car's acceleration.

  • HELP -

    If you want it in miles/hr^2, divide 48 miles/hr by 0.3 hours. If you want it in ft/s^2, m/s^2 or g's, you will have to do some conversions

  • HELP -

    change in velocity = (50-12) = 38 miles/hr
    change in time = .3 hours

    acceleration = (38 miles / hour) / .3 hours
    which is:

    127 miles/hour^2

    Now no one uses miles per hour squared. Hardly anyone uses feet per second squared any more either but since we are evidently not using metric units here, we can just go to feet/s^2
    We need to know there are 5280 feet in a mile and that there are 3600 seconds in an hour.
    127 miles/hr^2 * 5280 ft/mile * 1 hr^2/3600^2 s^2

    = 0.0517 ft/s^2

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. algebra

    At 9AM, two cars started from the same town and traveled north on the same road. One car averaged 45 miles per hour, and the other car averaged 40 miles per hour. In how many hours were the cars 30 miles apart?
  2. math

    substitute to find the value of the expression. A train must cover a distance of 2398 miles. The velocity, in miles per hour, of the train is where t is the time,in hours, to complete the trip. If the train completes the trip in 22 …
  3. Calculus

    A car passes by a certain point at time t = 0 hours heading east at 40 miles per hour. At t = 1 hour another car passes by the same point heading north at 50 miles per hour. What is the functiuonthat equals the distance between the …
  4. physics

    . Compared a car (mass of 2000 kg) moving at 10 miles per hour, how much kinetic energy (in Joules) does that same car have when it moves at 20 miles per hour?
  5. algebra

    A car travels down the highway at speeds between 50 miles per hour and 65 miles per hour. If the car travels for 4 hours, write an expression that represents the distance, d, the car has travelled.
  6. maths

    A motorist travels 120 miles to his destionation at an average speed of 60 miles per hour and returns to the starting point at an average speed of 40 miles per hour.His average speed for the entire trip is 1. 53 miles per hour 2. 52 …
  7. Physics kinematics

    The break of a car can slow it down from 60 miles per hour to 40 miles per hour in two secs how long it bring the car to a stop from an initial velocity of 25 miles per hour at the same acceleration
  8. algebra or algebra1

    An eastbound car is going 4 miles per hour faster than a westbound car. The cars are 208 miles apart 2 hours after passing each other on a highway. What is the speed, in miles per hour, of the eastbound car
  9. Trigonometry- Help!

    After one hour in flight, an airplane is located 200 miles north and 300 miles west of the airport. What is the magnitude of the plane's velocity?
  10. algebra or algebra1

    A truck leaves an intersection going 42 miles per hour. Half an hour later, a car going 62 miles per hour follows the truck. If x is the time, in hours, required for the car to catch the truck, then which of the following equations …

More Similar Questions