P2-Physical Science Semester Final

Front

What is the primary reason for using liquid hydrogen as rocket fuel?

Back

It's non-flammable.

Front

What is the net force when Anika pulls with 8N to the left and Liam pulls with 4N to the right?

Back

4N, Left.

Front

What happens to unstable molecules in a chemical?

Back

They easily break apart.

Front

What type of energy is stored in rocket fuel before it is ignited?

Back

Chemical potential energy.

Front

How does friction affect the motion of a bicycle?

Back

Friction decreases the speed of the bicycle.

Front

Define chemical potential energy.

Back

Energy stored in the bonds of chemical compounds, which can be released during a chemical reaction.

Front

What is the effect of non-flammable substances in rocket fuel?

Back

They reduce the risk of accidental ignition.

Front

Explain the concept of net force.

Back

The overall force acting on an object, calculated by combining all individual forces acting on it.

Front

What is the role of friction in motion?

Back

Friction opposes motion and can slow down or stop moving objects.

Front

What is the difference between kinetic energy and potential energy?

Back

Kinetic energy is the energy of motion, while potential energy is stored energy based on position.