Physics Fundamentals

What is the SI unit of force?

• Watt

• Volt

• Joule

• Newton (N)

What is the formula for calculating acceleration?

• acceleration = (final velocity + initial velocity) / time

• acceleration = (final velocity - initial velocity) / time

• acceleration = (final velocity * initial velocity) / time

• acceleration = final velocity / time

Explain the concept of inertia.

• The concept of inertia refers to the tendency of objects to resist changes in their motion.

• Inertia is only applicable to objects in space.

• Inertia is the same as momentum.

• Inertia is the force that causes objects to move.

Define Newton's First Law of Motion.

• An object will stop moving when no force is acting on it

• An object will move in a circular path when no force is acting on it

• An object will accelerate when no force is acting on it

• An object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.

What is the formula for calculating work?

• Work = Force x Distance

• Work = Velocity x Time

• Work = Energy x Power

• Work = Mass x Acceleration

Describe the difference between mass and weight.

• Mass is the weight of an object, weight is the amount of matter in an object.

• Mass is the amount of matter in an object, weight is the force exerted on an object due to gravity.

• Mass is measured in pounds, weight is measured in kilograms.

• Mass and weight are the same thing.

What is the law of conservation of energy?

• Energy can be created and destroyed at will

• Energy is only conserved in closed systems

• Energy conservation only applies to mechanical systems

• Energy cannot be created or destroyed, only transferred or transformed.

Explain the concept of momentum.

• Momentum is determined by the force applied to an object.

• Momentum is the product of an object's mass and velocity.

• Momentum is the result of an object's weight and speed.

• Momentum is calculated by dividing an object's mass by its acceleration.

Define the term 'power' in physics.

• Power in physics is the rate at which work is done or energy is transferred. It is measured in watts (W) and is calculated as the product of force and velocity.

• Power is the speed of an object in motion.

• Power is the force exerted on an object.

• Power is the ability to lift heavy objects.

What is the formula for calculating pressure?

• Pressure = Density * Height

• Pressure = Force / Area

• Pressure = Volume / Area

• Pressure = Mass * Acceleration