Newton's Laws

What is the difference between speed and velocity?

• Speed is the distance traveled per unit of time, while velocity includes both speed and direction.

• Speed is a vector quantity, while velocity is a scalar quantity.

• Speed can change direction, while velocity cannot.

• Speed is always greater than velocity.

What is acceleration?

• Acceleration is the rate at which an object's velocity changes over time.

• Acceleration is the speed of an object in a given direction.

• Acceleration is the distance covered by an object in a unit of time.

• Acceleration is the force applied to an object divided by its mass.

What is Newton's First Law of Motion?

• An object at rest stays at rest, and an object in motion stays in motion at the same speed and in the same direction unless acted upon by a net external force.

• An object will accelerate in the direction of the net force acting on it.

• For every action, there is an equal and opposite reaction.

• An object in motion will eventually come to a stop unless acted upon by an external force.

What is an example of Newton's First Law in everyday life?

• A passenger in a car lurches forward when the car suddenly stops; their body wants to continue moving forward.

• A ball rolls down a hill due to gravity.

• A person pushes a shopping cart and it moves forward.

• A book remains on a table until someone picks it up.

What is inertia?

• Inertia is the tendency of an object to resist changes in its state of motion.

• Inertia is the force that causes an object to accelerate.

• Inertia is the measure of an object's mass in motion.

• Inertia is the energy stored in an object due to its position.

What does it mean for an object to be in motion?

• An object is in motion if it changes its position relative to a reference point.

• An object is in motion if it remains at rest.

• An object is in motion if it is moving at a constant speed.

• An object is in motion if it is spinning in place.

What is an example of inertia?

• A book resting on a table will remain at rest until someone applies a force to move it.

• A car accelerating on a highway.

• A ball rolling down a hill.

• A person jumping off a diving board.

How does gravity affect motion?

• Gravity pulls objects toward the Earth, affecting their motion and speed.

• Gravity has no effect on motion.

• Gravity only affects objects in space.

• Gravity pushes objects away from the Earth.

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 / Initial Velocity.

What is the relationship between force and motion?

• Force is not necessary for an object to remain in motion.

• Force is required to change the motion of an object; without force, an object's motion will remain constant.

• Motion can occur without any force acting on an object.

• Force only affects the speed of an object, not its direction.