Physics Study Guide-Final Exam

Front

What is Newton's Second Law of Motion?

Back

Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed with the formula: F = ma (Force = mass x acceleration).

Front

How do you calculate momentum?

Back

Momentum (p) is calculated using the formula: p = mv (momentum = mass x velocity). It is a vector quantity, meaning it has both magnitude and direction.

Front

What is the difference between distance and displacement?

Back

Distance is the total path length traveled by an object, while displacement is the shortest straight-line distance from the initial to the final position, including direction.

Front

What is the formula for calculating weight?

Back

Weight (W) is calculated using the formula: W = mg (weight = mass x acceleration due to gravity). On Earth, g is approximately 9.81 m/s².

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R). It can be expressed as: V = IR.

Front

What is the unit of force?

Back

The unit of force is the Newton (N), which is defined as the force required to accelerate a 1 kg mass by 1 m/s².

Front

What is the principle of conservation of momentum?

Back

The principle of conservation of momentum states that in a closed system, the total momentum before an event (like a collision) is equal to the total momentum after the event.

Front

How do you calculate the voltage in a circuit?

Back

Voltage (V) can be calculated using Ohm's Law: V = IR, where I is the current in amperes and R is the resistance in ohms.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It is a vector quantity and can be calculated using the formula: a = (final velocity - initial velocity) / time.

Front

What is kinetic energy?

Back

Kinetic energy (KE) is the energy of an object due to its motion, calculated using the formula: KE = 1/2 mv² (where m is mass and v is velocity).