Phinal Physics Review!!

Definitions 1

100

Define conservation of energy

Energy is neither created nor destroyed. The total energy remains constant. Energy before = energy after

200

Define Newton's First Law

An object experiencing no net force will remain at rest or continue moving at a constant velocity.

300

Define Newton's Second Law

F=ma

400

Define Newton's Third Law

When two objects interact, they exert an equal and opposite force on each other.

500

Define impulse

Change in momentum = final momentum - initial momentum

Definitions 2

100

What happens to each of the following quantities in an inelastic collision?

-Total energy
-Total Momentum
-Total kinetic energy

Total energy - conserved
Total momentum - conserved
Total kinetic energy - NOT conserved

200

Define critical angle

The angle of incidence when light will refract along the boundary.

300

Define current

The rate of flow of charge

400

Define conservation of momentum

The total momentum in a system remains constant over time. Momentum is neither created nor destroyed. Momentum before = momentum after

500

Define total internal reflection and the TWO conditions needed for it.

Light reflecting instead of refracting at the boundary.

Conditions:
- Angle of incidence GREATER than the critical angle.

- Initial medium DENSER (higher n) than medium the light is bouncing off.

Tricky Qs!

100

How to find the total time the ball is in flight if I have the time to the maximum height?

DOUBLE IT!

200

What is the inertia of an object? What is it related to?

The ability of an object to change speed. It is the mass of an object.

300

What condition will result in ZERO work done?

Force is applied perpendicular to the direction the object is moved in.

400

What condition will result in NEGATIVE work?

When the force is in the opposite direction to the direction the object moves in

500

What is the Newton's third law pair (action-reaction pair) for the normal reaction force acting upwards on a block sitting on a table.

The normal reaction force acting downwards on the table due to the block.

Miscellaneous

100

What happens to the force of attraction between two objects if both masses are doubled and the distance between the two objects is doubled.

No change to the force of attraction!

200

What is the standard form for the prefix Tera?

x 10¹²

300

What is the standard form for Giga?

x 10⁹

400

Whats the total resistance when two resistors (of resistance 5 kiloOhms and 10 kiloOhms) are connected in PARALLEL?

3.33 kiloOhms

500

What splits between branches in parallel branches? What stays the same?

The current splits.

The voltage is the same along each branch.