1.

A flexible track is fixed in two alternative arrangements, as shown in the figure. A toy car is released at rest and slides down the track air resistance can be ignored. The length of the track used is the same in each case and the height through which it falls from the bench to the floor is the same. codes:

Answer»

<P>`{:(P,Q,R,S),(1,4,2,3):}`
`{:(P,Q,R,S),(2,3,1,2):}`
`{:(P,Q,R,S),(3,1,1,2):}`
`{:(P,Q,R,S),(4,1,3,2):}`

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