physics

A speedboat increases in speed from 21 m/s to 30.9 m/s in a distance 191 m. Find the magnitude of its acceleration.

  1. 👍
  2. 👎
  3. 👁
  1. average speed = (21 +30.9)/2 = 25.95 m/s
    so time = 191 m/25.95 m/s = 7.36 seconds

    a = change in velocity/change in time
    = (30.9-21)/7.36

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    Pairs of markings a set distance apart are made on highways so that police can detect drivers exceeding the speed limit. Over a fixed distance, the speed R varies inversely with the time T. For one particular pair of markings, R

  2. Science

    As a raindrop falls from a cloud to the surface of Earth, A.its speed increases due to gravity. B.its speed increases due to air resistance. C.t moves at a constant speed. D.>it moves at a constant velocity I think it is A. Am i

  3. physics

    An electron of mass 9.11 10-31 kg has an initial speed of 3.00 105 m/s. It travels in a straight line, and its speed increases to 8.00 105 m/s in a distance of 10.0 cm. (a) Assuming its acceleration is constant, determine the

  4. physics

    A speedboat increases in speed from 20 m/s to 30 m/s in a distance of 200m. Find (a) the magnitude of its acceleration and (b) the time it takes the boat to travel this distance. (a) (I am not sure what the magnitude is) (b) 200m

  1. Algebra 1

    What is the end behavior of the graph of f(x) = -0.25x^2 - 2x + 1? A) As x increases, f(x) increases. As x decreases, f(x) decreases. *** B) As x increases, f(x) decreases. As x decreases, f(x) decreases. C) As x increases, f(x)

  2. Physics

    A truck speed increases uniformly from 10 m/s to 30 m/s in 20 seconds. Find the ff: a. average speed b. acceleration c. distance covered during the period

  3. Maths

    The braking distance of a car is directly proportional to te square of it's speed. When the speed is p metres per second, the braking distance is 6m. When the speed is increased by 300%, find (a) an expression for speed of the car

  4. dynamics

    a truck traveling along a straight road at 20km/h,increases its speed to 120km/hr in 15 s. If its acceleration is constant. determine the distance traveled.

  1. Science

    During a space shuttle landing, a parachute deploys from the back of the shuttle as it taxis down the runway. In addition to the speed brake, the parachute helps the shuttle come to a complete stop. How does the parachute help

  2. Physics 11

    You are creating waves in a rope by shaking your hand back & forth. W/out changing the distance your hand moves, you begin to shake it faster & faster. What happens to each of the following aspects of the wave? Amplitude remains

  3. Algebra

    How are the variables related on the graph? A. As speed decreases, height stays constant B. As speed deceases , height increases C. As speed increases , height decreases D. As speed increases , height increases

  4. Physics

    As the distance between two masses increases, the gravitational force of attraction between them A. decreases*** B. increases C. remains the same Is this correct?

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