A 3kg metal ball, which initial velocity u is 0ms-1, rolls down a slope of height 6m. It reaches the bottom of the slope with a speed of 5ms-1. If the average friction between the ball and the slope is 6.33N, find the distance travelled by the ball.
A) 4.69m
B) 17.8m
C) 22.0m
D) 27.2m
Physics mechanics question?
2016-03-10 3:59 am
回答 (1)
2016-03-10 11:34 am
assume that the ball had traveled A meters
(0.5x3x0)+(3x9.8x6)=(0.5x3x5x5)+6.33xA (from conservation of energy)
0+176.4=37.5+6.33A
6.33A=138.9
A=22.0
Answer:(C)
(0.5x3x0)+(3x9.8x6)=(0.5x3x5x5)+6.33xA (from conservation of energy)
0+176.4=37.5+6.33A
6.33A=138.9
A=22.0
Answer:(C)
收錄日期: 2021-05-04 02:13:03
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