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Author Question: An automobile moving along a straight track changes its velocity from 40 m/s to 80 m/s in a distance ... (Read 165 times)

pepyto

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on: Jul 28, 2018
An automobile moving along a straight track changes its velocity from 40 m/s to 80 m/s in a distance of 200 m. What is the (constant) acceleration of the vehicle during this time?
 a. 8.0 m/s
  b. 9.6 m/s
  c. 12 m/s
  d. 6.9 m/s
  e. 0.20 m/s

Question 2

A particle moving with a constant acceleration has a velocity of 20 cm/s when its position is x = 10 cm. Its position 7.0 s later is x = -30 cm. What is the acceleration of the particle?
 a. -7.3 cm/s2
  b. -8.9 cm/s2
  c. -11 cm/s2
  d. -15 cm/s2
  e. -13 cm/s2


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shewald78

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Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

A


pepyto

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

raenoj

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Reply 3 on: Yesterday
Gracias!

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