physics

A car is speeding up and has an instantaneous speed of 14.0 m/s when a stopwatch reads 9.0 s. It has a constant acceleration of 2.3 m/s2
(b) What is the speed when the stopwatch reads 12.2 s?

  1. 👍 0
  2. 👎 0
  3. 👁 576
  1. V = Vo + at,
    V = 14 + 2.3(12.2-9) = 21.36m/s

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. calculus

    A police cruiser, approaching a right –angled intersection from the north is chasing a speeding car that has turned the corner and is now moving straight east. When the cruiser is 0.6 mi north of the intersection and the car 0.8

  2. Physics

    Need Help with physics! Two cars drive on a straight highway. At time t = 0, car 1 passes mile marker 0 traveling due east with a speed of 17.0 m/s. At the same time, car 2 is 1.3 km east of mile marker 0 traveling at 30.0 m/s due

  3. conceptual psychics

    suppose that you are an accident investigator and you are asked to figure whether or not the car was speeding before it crashed through the rail of the bridge and into the mudbank as shown. the speed limit of the bridge is

  4. physics

    On an icy road, a 2100-kg car moving at 52 km/h strikes a 410-kg truck moving in the same direction at 35 km/h. The pair is soon hit from behind by a 1800-kg car speeding at 45 km/h, and all three vehicles stick together. Find the

  1. sunshine

    Distinguish between instantaneous speed and average speed. A man drives a car a distance of 200km at an average speed of 44kmh-1. What must be his average speed fot the next 220 km if he is to cover the total distances in 9 hours?

  2. Physics

    A speed trap is set up with two pressure-activated strips placed across a highway, 110 m apart. A car is speeding along at 33 m/s, while the speed limit is 21 m/s. At the instant the car activates the first strip, the driver

  3. Chemistry

    Hi, This is a challenge question for my intro chemistry class and I'd really like to do it. Its in 2 parts. 1. Consider a 2790-lb automobile clocked by law-enforcement radar at a speed of 85.5 mph (miles/hour). If the position of

  4. Physics

    The speed time graph shows the motion of a car over a period of 40 seconds. a. describe the motion of the car between: 1.) O and A - The car is traveling at constant speed from 0 to 20 m/s. 2.) A and B - The car is at rest for 20

  1. physics

    A truck is pulling a car. FT is the magnitude of the force that the truck exerts on the car FC is the magnitude of the force that the car exerts on the truck Consider the following scenarios independently. 1)The truck is driving

  2. physics

    A car is speeding up and has an instantaneous velocity of 1.0 m/s in the +x-direction when a stopwatch reads 10.0 s. It has a constant acceleration of 2.0 m/s2 in the +x-direction. (a) What change in speed occurs between t = 10.0

  3. Physics

    Two stunt drivers drive directly toward each other. At time t=0 the two cars are a distance D apart, car 1 is at rest, and car 2 is moving to the left with speed v_0. Car 1 begins to move at t=0, speeding up with a constant

  4. math

    Your car’s speedometer is geared to accurately give your speed using a certain size tire. Suppose your car has d = 14 inch diameter wheels and the height of the tire is h = 4.5 inches. (a) You buy a new set of tires with h = 5.5

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