Name
Phys 2010 (NSCC), Fall 2005
Problem Set #8
1. A 300-kg car moves under down a level highway under the actions of two forces: a 1000-N
forward force exerted on the drive wheels by the road and a 950-N resistive force. Use the
work–energy theorem to find the speed of the car after it has moved a distance of 20 m.
25o
2. A2.0-m long pendulum is released from rest when
the support string is at an angle of 25◦from the vertical.
What is the speed of the bob at the bottom of the swing?
1
