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Author Question: A car that is initially moving at 7.50 m/s begins to accelerate forward uniformly at 0.550 m/s2. ... (Read 73 times)

Medesa

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on: Jul 29, 2018
A car that is initially moving at 7.50 m/s begins to accelerate forward uniformly at 0.550 m/s2.
  (a) How long after beginning to accelerate does it take the car to move 3.50 km?
  (b) How fast is the car moving just as it has traveled 3.50 km?
 
  What will be an ideal response?

Question 2

The speed of a bullet fired from a gun will be about the same as the speed of the recoiling gun
 
  A) when momentum is conserved.
  B) because velocity is conserved.
  C) when both velocity and momentum are conserved.
  D) if the masses of the bullet and gun are equal.
  E) none of the above


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billybob123

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Reply #1 on: Jul 29, 2018
Answer to Question 1

(a) 1.00  102 s (b) 62.5 m/s

Answer to Question 2

Answer: D


Medesa

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Reply 2 on: Jul 29, 2018
YES! Correct, THANKS for helping me on my review

nanny

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Reply 3 on: Yesterday
Excellent

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