Tuesday, May 19, 2015

Did it accelerate

Kobe pitches a baseball at 40 km/h east. Emily hits the ball at 40 km/h west. Did the ball accelerate? Explain. 

72 comments:

  1. No because it was the exact speed for both hits it stayed at 40km/h

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  2. no it didn't.

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    Replies
    1. the ball did not accelerate because it went the same speed of the pitch.

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  3. Xx_Aaron_Peter_Mills_xXTuesday, May 19, 2015

    the ball curved and went west, so in order for the ball to stay in the air, it must accelerate. so it accelerated on the turn.

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  4. Xx_Aaron_Peter_Mills_xXTuesday, May 19, 2015

    the ball then slowed down once it completed the curve.

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  5. The ball did accelerate because it changed direction.

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  6. Replies
    1. no it did not because it did not increase the speed.

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    2. No it did not because it did not increase the speed.

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  7. Replies
    1. because the ball will only slow down

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    2. No it did not the ball will only slwo down

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  8. This comment has been removed by the author.

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  9. Yes, when it changed direction after the bat hit it with force it accelerated.

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  10. Yes the did acceletate becase she hit the ball and it went in a different direction and it traveled off the bat which when she hit it she used force.

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  11. Yes it accelerated it didn't changed speed but it changed directions.

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  12. Chloe Owen ❤️Tuesday, May 19, 2015

    The ball did not accelerate because they both hit it different directions.

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  13. It accelerated 40 kpm because it slowed down as soon as it it the bat and went the other direction.

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  14. The ball did accelerate because it changes directions.

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  15. Yes it did accelerate because it changed directions.

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  16. Yes, it did accelerate because the speed of the ball coming one way and going the opposite way at the same speed.

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  17. Yes it didn't changed speed but it changed directions.

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  18. The ball will accelerate because it goes in different directions.

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  19. hayden wilkinsTuesday, May 19, 2015

    The ball was thrown with a curve which is called a curve ball. The answer to this question was the ball did not accelerate because it was thrown and hit at the same exact speed.

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  20. No because it was the exact speed for both hits at the speed of 40km/h

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  21. Yes the ball did accelerate because it changed direction.

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  22. The ball did accelerate because it went a different way.

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  23. No the ball did not go faster, so therefore the ball did not accelerate.

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  24. Yes the ball sped up because it changed direction.

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  25. Yes the ball dud accelerate because it got pushed to another spot

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  26. No, the base ball did not accelerate it just changed direction after the impact from the bat hitting it.

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  27. Yes because it changed Direction when it was hit.

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  28. Yes it will speed up than slow down and it changed direction.

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  29. Yes the ball did accelerate, when emily hit the ball it changed speed and its direction.

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  30. No beaus accelerate is recently going faster and it did not do that.

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  31. The ball accelerated, because it changed direction.

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  32. Yes it did accelerate, because it accelerated when it was launched.

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  33. Brooke DeCapuaTuesday, May 19, 2015

    Yes, the ball did accelerate because when Emily hit the ball it went in a different direction.

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  34. No the ball did not go faster but it did transfer the direction.

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  35. No I didn't accelerate because it stayed at the same speed as the pitch.

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  36. Yes the ball did accelerate because the ball went in a different direction.

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  37. The ball accelerated in the opposite direction.

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  38. Yes, the ball did accelerate because the ball changed direction due to Emily hitting it.

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  39. Yes the ball accelerated when it was hit and it changed the direction.

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  40. Yes because the ball had to accelerate in order to move at all.

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  41. The ball did accelerate because the ball changed direction due to the force of Emily hitting it.

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  42. Yes it did accelerate because it had to change direction.

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  43. Yes because of the change of direction.

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  44. Yes it did because the ball had to rise up and speed up after hit and it moved direction.

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  45. Yes it accelerated because it had to change direction.

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  46. Yes, because the hitting of the bat causes the ball to accelerate to go even faster in a different direction.

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  47. Yes the ball had to accelerate to make it to Emily at home plate and the ball changed direction.

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  48. yes, the ball did accelerate because the ball changed direction the way Emily hit it.

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  49. Yes it accelerated because it changed direction.

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  50. Yes, it changed direction

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  51. Yes the ball had to accelerate to make it to Emily at home plate and the ball changed direction.

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  52. Yes the ball did accelerate, when emily hit the ball it changed speed and its direction.

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  53. Yes, it changed directions.

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  54. Yes,Speed up,change direction,slow down

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  55. Maddy And KaylaTuesday, May 19, 2015

    Yes, it did accelerate because the speed of the ball coming one way and going the opposite way at the same speed

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  56. Yes, the ball changed direction when it was hit.

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  57. Yes it changed direction.

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  58. Kassidy DunnellsTuesday, May 19, 2015

    Yes :)

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  59. Yes. It changed direction.

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  60. The ball accelerated because the faster you pitch the faster the ball will go off the bat.

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  61. Yes the ball had to accelerate to make it to Emily at home plate and the ball changed direction.

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  62. Yes because it changed direction.

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  63. Yes because it changed direction.

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  64. Yes, the ball accelerated because of it changing direction.

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