University of toronto at Mississauga

Second term test

PHY146H5F

PROBLEM 2

A spacecraft is in a circular Earth orbit at an altitude of 6000 km. By how much will its altitude change: (a) if the spacecraft moves to a new circular orbit with orbital period shorter by 5%, (b) if the spacecraft moves to a new circular orbit with its orbital speed 10% higher than original speed. 

Solution:

PROBLEM 3

One object is initially at rest. The second object collides heads-on with the first in elastic collision. If half the kinetic energy of the second object is transferred to the first object during collision, what is the ratio of their masses?

Solution: