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Author Question: Mary and Debra stand on a snow-covered roof. They both throw snowballs with the same initial speed, ... (Read 33 times)

chandani

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on: Jul 29, 2018
Mary and Debra stand on a snow-covered roof. They both throw snowballs with the same initial speed, but in different directions.
 
  Mary throws her snowball downward, at 30 below the horizontal; Debra throws her snowball upward, at 30 above the horizontal. Which of the following statements are true about just before the snowballs reach the ground below? (There could be more than one correct choice.) A) Debra's snowball will stay in the air longer than Mary's snowball.
  B) Mary's snowball will stay in the air longer than Debra's snowball.
  C) Both snowballs will take the same amount of time to hit the ground.
  D) Debra's snowball has exactly the same acceleration as Mary's snowball.
  E) Mary's snowball has a greater downward acceleration than Debra's snowball.

Question 2

A satellite with a rest mass of 200 kg and a speed of 0.800c and a second satellite with a rest mass of 100 kg and a speed of 0.600c are traveling toward each other in deep space. The satellites collide and somehow manage to stick together.
 
  What is the rest mass of the combined object after the collision? A) 300 kg
  B) 389 kg
  C) 416 kg
  D) 457 kg
  E) 587 kg
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canderson530

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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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chandani

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Reply 2 on: Jul 29, 2018
Gracias!

cpetit11

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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