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Author Question: A 1200-kg car is pulling a 500-kg trailer along level ground. Friction of the road on the trailer is ... (Read 99 times)

abc

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on: Jul 29, 2018
A 1200-kg car is pulling a 500-kg trailer along level ground. Friction of the road on the trailer is negligible. The car accelerates with an acceleration of 1.3 m/s2. What is the force exerted by the car on the trailer?
 
  A) 550 N
  B) 600 N
  C) 650 N
  D) 700 N
  E) 750 N

Question 2

A 0.140-kg baseball is dropped and reaches a speed of 1.20 m/s just before it hits the ground and bounces. It rebounds with an upward velocity of 1.00 m/s. What is the change of the ball's momentum during the bounce?
 
  A) 0.0280 kg  m/s upwards
  B) 0.0280 kg  m/s downwards
  C) 0.308 kg  m/s upwards
  D) 0.308 kg  m/s downwards
  E) 0.000 kg  m/s
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jazzlynnnnn

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Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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abc

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Reply 2 on: Jul 29, 2018
Wow, this really help

peter

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Reply 3 on: Yesterday
Gracias!

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