Physical Science 2024 Fall Final Exam review

Front

A testable prediction based on observations is a(n) _____________.

Back

Hypothesis

Front

Distance and direction of an object from its starting point is known as _____________.

Back

Displacement

Front

What is the total momentum after a collision if the total momentum before the collision was 140,000 kg x m/s?

Back

140,000 kg x m/s

Front

What is the formula for calculating momentum?

Back

P=mv

Front

The force that keeps an object in orbit is called _____________.

Back

Centripetal force

Front

What is the definition of velocity?

Back

Velocity is the speed of an object in a given direction.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What is the law of conservation of momentum?

Back

The law states that the total momentum of a closed system remains constant if no external forces act on it.

Front

What is the unit of momentum?

Back

The unit of momentum is kg x m/s.