Physics

posted by .

The acceleration of a bus is given by a_x(t)=At, where A= 1.21 is a constant.

A)if the bus's velocity at time t_1= 1.14s is 5.03m/s, what is its velocity at time t_2= 2.04 ?

B)if the bus's velocity at time t_1= 1.14s is 6.02m/s, what is its velocity at time t_2= 2.04 ?

  • Physics -

    A) The velocity change is the integral of the acceleration vs time

    change in V = INTEGRAL 1.21 t dt
    from t = 1.14 to t = 2.04 s
    = 1.21[(2.04)^2 - (1.14)^2]/2

    B) Same approach; same velocity change; different starting velocity

  • Physics -

    1.73

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    1.The speed of a train increased from 15 mi/hr to 25 mi/hr in a distance of 500 ft. Calculate the average acceleration in ft/s2. 2.An airplane taking off from a landing field has a run of 500 m. It starts from rest, moves with constant …
  2. PHYSICS

    A student is running at her top speed of 4.6 m/s to catch a bus, which is stopped at the bus stop. When the student is still a distance 38.9 m from the bus, it starts to pull away, moving with a constant acceleration of 0.177 m/s^2. …
  3. physics

    For no apparent reason, a poodle is running counter-clockwise at a constant speed of 5.40 m/s in a circle with radius 2.3 m. Let v_1 be the velocity vector at time t_1, and let v_2 be the velocity vector at time t_2. Consider change …
  4. Physics

    1.Can an object reverse its direction of travel while maintaining a constant acceleration?
  5. Physics

    If you were standing in a bus moving at constant velocity would you have to lean in some special way to compensate for the bus's motion?
  6. AP Physics

    Jack is 12m from the bus and is running towards the bus at a constant 4.0m/s. If the bus accelerates away from the bus stop at .8m/s^2, can he catch the bus?
  7. Physics? clueless on what to do

    Jack is 12m from the bus and is running towards the bus at a constant 4.0m/s. If the bus accelerates away from the bus stop at .8m/s^2, can he catch the bus?
  8. Physics

    Traveling in the city its faster to take a bicycle than a bus, one reason for this is that a bike can accelerate faster than a bus. Let’s say a Bike and bus both stopped at a red light and both takes off an exact same time when the …
  9. physics

    a bus is travelling on a horizontal road at a velocity of 126 km/h when the bus driver notices an object in the road. the brakes are applied and the bus is brought to rest over a distance of 150m. the frictional resistance is 2500n …
  10. Ndmc

    A bus starts from rest with a constant acceleration of 5m/s². At the same time a car traveling with a constant velocity of 50m/s overtakes and passes the bus. (i) Find at what distance will the bus overtakes the car?

More Similar Questions