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Author Question: A particle starts from rest at xi = 0 and moves for 10 s with an acceleration of +2.0 cm/s2 . For ... (Read 231 times)

abarnes

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on: Jul 28, 2018
A particle starts from rest at xi = 0 and moves for 10 s with an acceleration of +2.0 cm/s2 . For the next 20 s, the acceleration of the particle is -1.0 cm/s2 . What is the position of the particle at the end of this motion?
 a. zero
  b. +3.0 m
  c. -1.0 m
  d. +2.0 m
  e. -3.0 m

Question 2

An electron, starting from rest and moving with a constant acceleration, travels 2.0 cm in 5.0 ms. What is the magnitude of this acceleration?
 a. 2.5 km/s2
  b. 0.80 km/s2
  c. 1.6 km/s2
  d. 1.3 km/s2
  e. 3.2 km/s2


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yasmina

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

B

Answer to Question 2

C


abarnes

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Reply 2 on: Jul 28, 2018
Gracias!

kjohnson

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Reply 3 on: Yesterday
Excellent

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