- #1
lwymarie
- 90
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http://student.shcc.edu.hk/~s021107/rdhg.GIF
a ball of 0.1 kg slides down the track from A and completes the loop without leaving the track. if the ball passes C at 3ms^-1 and D at 4 ms^-2, which of the following is/are correct?
1. energy of the ball at B is 1.1J
2. frictional force acting on the ball is 0.191N
3. the ball will continue to run on the horizontal track for 4. 19 m after passing D
a. 1 only
b. 3 only
C 1 and 2 only
D 1, 2 and 3
a ball of 0.1 kg slides down the track from A and completes the loop without leaving the track. if the ball passes C at 3ms^-1 and D at 4 ms^-2, which of the following is/are correct?
1. energy of the ball at B is 1.1J
2. frictional force acting on the ball is 0.191N
3. the ball will continue to run on the horizontal track for 4. 19 m after passing D
a. 1 only
b. 3 only
C 1 and 2 only
D 1, 2 and 3
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