Physics Fundamentals

What is the SI unit of force?

• Volt (V)

• Watt (W)

• Joule (J)

• Newton (N)

Define Newton's first law of motion.

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

• Objects in motion will eventually come to a stop without any external force.

• An object will move in a circular path unless a force is applied.

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

Explain the concept of inertia.

• Inertia is the force that causes objects to move.

• Inertia is the ability of an object to change its motion easily.

• Inertia is only applicable to objects in motion.

• The concept of inertia refers to an object's tendency to resist changes in its motion.

What is the formula for calculating acceleration?

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

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

• acceleration = final velocity / time

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

Describe the difference between mass and weight.

• Mass is the weight of an object, weight is the size of 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 is the volume of an object, weight is the density of an object.

What is the law of conservation of energy?

• Energy cannot be created or destroyed, only transformed from one form to another.

• Energy can be created out of nothing

• Energy can be destroyed completely

• Energy can only be transformed into matter

Define the term 'work' in physics.

• Work is the product of force and distance.

• Work is the result of speed and time.

• Work is measured in kilograms.

• Work is the same as power.

Explain the concept of power.

• Power is the ability to fly

• Power is the ability to bake cookies

• Power is the ability to influence or control others, resources, or events.

• Power is the ability to speak multiple languages fluently

What is the formula for calculating kinetic energy?

• KE = 0.5 * m * v^2

• KE = m / v

• KE = 0.5 * m + v

• KE = m * v^2

Describe the difference between potential and kinetic energy.

• Potential energy is the energy of sound, while kinetic energy is the energy of light.

• Potential energy is the energy of motion, while kinetic energy is the energy of position.

• Potential energy is energy in motion, while kinetic energy is stored energy.

• Potential energy is stored energy, while kinetic energy is energy in motion.