***TWO QUESTIONS HERE!***** ***A roller coaster of mass 80.0 kg is moving with a
ID: 2211925 • Letter: #
Question
***TWO QUESTIONS HERE!*****
***A roller coaster of mass 80.0 kg is moving with a speed of 20.0 m/s at position A as shown in Figure.
****** The vertical height at position A above ground level is 200 m. ***
***Neglect friction and use g = 10.0 m/s2. 21)
Refer to Figure
What is the total energy of the roller coaster at point A?
A) 16.0 ? 103 J
B) 20.2 ? 103 J
C) 16.0 ? 104 J
D) 17.6 ? 104 J
22) Refer to Figure above. What is the total energy of the roller coaster at point B?
A) 16.4 ? 103 J
B) 20.2 ? 103 J
C) 17.6 ? 104 J
D) 16.4 ? 104 J
Answer: C
****I NEED FULL COMPLETE SOLUTIONS TO GET DELICIOUS KARMA!***** DON'T COPY AND PASTE FROM YAHOO ANSWERS!******
Explanation / Answer
a ) 80*10*200 + 0.5* 80 * 20*20 = 17.6*10^4 J b) conservation of energy at point B total energy = 17.6*10^4 J c)
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