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Author Question: A 2 900-kg truck moving at 11.0 m/s strikes a car waiting at a traffic light, hooking bumpers. The ... (Read 74 times)

kwoodring

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on: Jul 28, 2018
A 2 900-kg truck moving at 11.0 m/s strikes a car waiting at a traffic light, hooking bumpers. The two continue to move together at 7.00 m/s. What was the mass of the struck car?
 a. 4 750 kg
  b. 7 460 kg
  c. 1 760 kg
  d. 1 660 kg
  e. 4 560 kg

Question 2

During a snowball fight two balls with masses of 0.30 and 0.70 kg, respectively, are thrown in such a manner that they meet head-on and combine to form a single mass. The magnitude of initial velocity for each is 12.0 m/s. What is the speed of the 1.0-kg mass immediately after collision?
 a. zero
  b. 4.8 m/s
  c. 12 m/s
  d. 8.4 m/s
  e. 3.6 m/s


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phuda

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

d

Answer to Question 2

b


kwoodring

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

Sarahjh

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Reply 3 on: Yesterday
Gracias!

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