Physics Fundamentals for Grade 11

What is the definition of displacement?

• Displacement is the average position of an object during its motion.

• Displacement refers to the change in speed of an object over time.

• Displacement is the shortest distance from the initial to the final position of an object, including direction.

• Displacement is the total distance traveled by an object regardless of direction.

How do you calculate average velocity?

• Average Velocity = Total Displacement x Total Time

• Average Velocity = Total Displacement / Total Time

• Average Velocity = Total Distance / Total Time

• Average Velocity = Total Speed / Total Time

What is the difference between speed and velocity?

• Speed is scalar; velocity is vector (includes direction).

• Speed includes direction, while velocity does not.

• Velocity measures distance only.

• Speed is a type of velocity.

State Newton's First Law of Motion.

• An object will accelerate unless a force is applied.

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

• An object will change its velocity only if it is in motion.

• An object will remain in motion until it collides with another object.

What is the formula for calculating force?

• F = m * a

• F = m + a

• F = m / a

• F = m - a

Explain the concept of inertia.

• Inertia is the resistance of an object to any change in its motion.

• Inertia is the force that causes an object to move faster.

• Inertia is the energy stored in a moving object.

• Inertia is the speed of an object in motion.

What is kinetic energy and how is it calculated?

• Kinetic energy is the energy of an object at rest.

• Kinetic energy is calculated using the formula KE = 0.5 * m * v^2.

• Kinetic energy is determined by the object's temperature.

• Kinetic energy is calculated using the formula KE = m * v.

Define potential energy and give an example.

• A fish swimming in the ocean.

• A balloon filled with air.

• A car driving on a flat road.

• An example of potential energy is a rock positioned at the top of a hill.

What is the work-energy theorem?

• The work-energy theorem states that energy cannot be created or destroyed.

• The work-energy theorem applies only to objects at rest.

• The work-energy theorem relates the work done on an object to its change in kinetic energy.

• The work-energy theorem is unrelated to kinetic energy.

How do you calculate the work done by a force?

• Work = Force / Distance

• Work = Force × Distance × cos(θ)

• Work = Force - Distance

• Work = Force + Distance