Momentum

Momentum is a measure of motion, calculated by multiplying an object's mass by its velocity. It has both direction and magnitude. When objects interact, their total momentum is conserved, as seen in snooker ball collisions. On Earth, external forces like friction and gravity eventually stop moving objects, transferring momentum to the ground, slightly affecting Earth's rotation. In space, without air resistance, objects maintain their momentum indefinitely.

What is momentum a product of?

• Mass and velocity

• Velocity and time

• Mass and acceleration

• Force and distance

What happens to the total momentum when two objects collide?

• It remains the same

• It increases

• It decreases

• It becomes zero

In the snooker ball example, what happens to the white ball's momentum?

• It doubles

• It remains unchanged

• It loses momentum

• It gains momentum

What happens to momentum when an object stops due to friction?

• It increases

• It remains with the object

• It is transferred to the surface

• It disappears

Why does a space probe maintain its momentum in space?

• Due to Earth's rotation

• Because there is no friction

• Due to air resistance

• Because of gravity