H. E. Smith Spring 2004

Physics 1a - Reading Quiz #4

1. A car and a truck collide in an intersection and the merged wreck continues along. During the collision
   • A. both kinetic energy and momentum are conserved.
   • B. neither kinetic energy nor momentum is conserved.
   • C. momentum is conserved but not kinetic energy.
   • D. kinetic energy is conserved but not momentum.
   • E. conservation depencs upon the details of the collision.

2. Two carts have masses m_A and m_B such that m_A > m_B. Cart B has a spring attached to its rear and the two carts are pushed together rear to rear so that the spring is compressed, then released. The result is that.
   • A. A moves forward and B remains stationary.
   • B. B moves forward and A remains stationary.
   • C. Both carts move forward with equal velocity.
   • D. Both carts move forward with v_A > v_B
   • E. Both carts move forward with v_A < v_B

     ---