Physics 2 (URGENT)

posted by .

Which of the following has an acceleration in the same direction as the object's motion?

1. Vi=3.5m/s [east]; Vf=7.5m/s [east]
2. Vi=45km/h [north]; Vf=60km/h [north]
3. Vi=15m/s [right]; Vf=10m/s [left]

Textbook Ans: 1 and 2

Can someone explain why? Cause I don't know how to get the answer. Thanks very much.

  • Physics 2 (URGENT) -

    If the speed is increasing in the direction the thing is going, that qualifies.
    Number 3 is reversing direction, moving right at the beginning but accelerating left.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. cardinal directions

    what is the difference between Northeast and North of East or East of North. Same with Northwest, what's North of West or West of North?
  2. physics

    A train at a constant 41.0 km/h moves east for 38 min, then in a direction 44.0° east of due north for 25.0 min, and then west for 59.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north …
  3. physics

    A train at a constant 68.0 km/h moves east for 41 min, then in a direction 65.0° east of due north for 22.0 min, and then west for 60.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north …
  4. physics

    A train at a constant 68.0 km/h moves east for 41 min, then in a direction 65.0° east of due north for 22.0 min, and then west for 60.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north …
  5. Physics

    A train at a constant 44.0 km/h moves east for 42 min, then in a direction 45.0° east of due north for 17.0 min, and then west for 51.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north …
  6. Physics

    A train at a constant 44.0 km/h moves east for 42 min, then in a direction 45.0° east of due north for 17.0 min, and then west for 51.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north …
  7. Physics

    A train at a constant 41.0 km/h moves east for 28 min, then in a direction 53.0° east of due north for 15.0 min, and then west for 64.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north …
  8. physics

    An object has a velocity of 5.00 m/s at an angle of 30.0˚ north of east. If we define east as the +x direction and north as the +y direction, what is the magnitude of vy?
  9. physics

    A car A is going north-east at 80km/h and another car B is going south-east at 60km/h. The direction of the relative velocity of A with B makes an angle of x with north find x
  10. Geometry

    A boat left dock A, traveled north for 10 miles, then 45 East of north for 20 miles and docked at B. A.How far north did the boat travel?

More Similar Questions