1. what is the kinetic energy of a 65 kg rocket traveling at 109 m/s? ( j ) type answer as a whole number (no decimals). type the number only, not the units. use commas: for example, type 100,000, not 100000 2. what is the momentum of the rocket in the previous problem? ( kg · m/s) type answer as a whole number (no decimals, no commas). type the number only, not the units.

1) The kinetic energy of an object is equal to

where
m is the object mass
v its velocity

For the rocket in our problem, the mass is m=65 kg and the velocity is v=109 m/s, so its kinetic energy is


2) The momentum of the rocket is given by

where m is the rocket mass and v its velocity. Substituting again the data of the rocket, we find:

1. Earth pulls the sun away from itself with an equal force.