Physics Fundamentals

What is the SI unit of force?

• Pascal

• Joule

• Newton (N)

• Watt

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

Explain the concept of inertia.

• Inertia is the force that causes objects to move.

• Inertia is the resistance of an object to gravitational pull.

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

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

Define the term 'work' in physics.

• Work is the product of force and distance.

• Work is measured in volts.

• Work is the same as power.

• Work is the result of speed and time.

What is the law of conservation of energy?

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

• Energy can only be transformed into matter

• Energy can be destroyed completely

• Energy can be created out of nothing

Describe the difference between speed and velocity.

• Speed and velocity are the same thing.

• Velocity is scalar, speed is vector.

• Speed is a measure of distance, velocity is a measure of time.

• Speed is scalar, velocity is vector.

What is the formula for calculating momentum?

• momentum = mass x velocity

• momentum = mass - velocity

• momentum = mass + velocity

• momentum = mass / velocity

Explain the first law of thermodynamics.

• Energy can be transformed into matter.

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

• Energy can be destroyed completely.

• Energy can be created out of nothing.

What is the difference between mass and weight?

• Mass is constant, while weight changes depending on the location.

• Mass is a vector quantity, while weight is a scalar quantity.

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

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

Define the term 'power' in physics.

• Power is the speed of an object in motion.

• 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 force exerted on an object.

• Power is the ability to lift heavy objects.