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Author Question: A 10-kg object is dropped from rest. After falling a distance of 50 m, it has a speed of 26 m/s. ... (Read 218 times)

Zoey63294

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on: Aug 1, 2020

Question 1

A 1.6-kg block slides down a plane (inclined at 25° with the horizontal) at a constant speed of 2.0 m/s. At what rate is the frictional force changing the mechanical energy of the block?

◦
+28 W

◦
+13 W

◦
−13 W

◦
−28 W

◦
+6.5 W


Question 2

A 10-kg object is dropped from rest. After falling a distance of 50 m, it has a speed of 26 m/s. What is the change in mechanical energy caused by the dissipative (air) resistive force on the object during this descent?

◦
−1.3 kJ

◦
−1.5 kJ

◦
−1.8 kJ

◦
−2.0 kJ

◦
−2.3 kJ
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
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Marked as best answer by Zoey63294 on Aug 1, 2020

scikid

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Reply #1 on: Aug 1, 2020
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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Zoey63294

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Reply 2 on: Aug 1, 2020
Wow, this really help

yeungji

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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