IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => GCE AS & A2 Level => Sciences => Topic started by: IGSTUDENT on July 04, 2011, 10:05:15 am

Title: physics help
Post by: IGSTUDENT on July 04, 2011, 10:05:15 am

needed help on following q's...

1. Calculate the final speed of a 1500 kg roller coaster if it has an initial speed of 16 m/s but reduces its elevation by 8.6 m by coasting down a frictionless incline.

2. A 0.50 kg cue ball makes a glancing blow to a stationary 0.50 kg billiard ball. After the collision the cue ball deflects with a speed of 1.2 m/s at an angle of 30.0º from its original path. Calculate the original speed of the cue ball if the billiard ball ends up travelling at 1.6 m/s.

thanks

Title: Re: physics help
Post by: Shoshou..Mony on July 15, 2011, 03:22:54 pm

This is not the right child-board. It should be in Subject doubts. =]