Physics

The correct answer is: The direction of an object's momentum at any moment is always the same as the direction of its velocity at that moment.

Momentum is defined as the product of mass and velocity: p=mv. Since mass is always positive, the direction of momentum is the same as the direction of the velocity.

Option B

If an object's kinetic energy is constant, its momentum must also be constant.

Incorrect. Kinetic energy is given by

Click "Show Answer" to reveal the answer and analysis