Newtons Laws of Motion

What is the effect of friction on motion?

• Friction accelerates the motion of an object.

• Friction has no effect on motion.

• Friction opposes the motion of an object, causing it to slow down or stop.

• Friction increases the speed of an object.

Which choice below best defines gravity?

• A force that repels objects away from each other.

• An object's mass attracting other objects towards it.

• The speed at which an object falls to the ground.

• The curvature of space around a massive object.

What is velocity?

• It is the speed of an object.

• It is the speed AND direction of an object.

• It is the distance traveled by an object.

• It is the time taken to travel a distance.

What is the unit of force in the International System of Units (SI)?

• Joule (J)

• Newton (N)

• Pascal (Pa)

• Watt (W)

What is Newton's First Law of Motion?

• An object at rest stays at rest, and an object in motion stays in motion 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 without external forces.

What is inertia?

• The tendency of an object to resist changes in its state of motion.

• The force that causes an object to accelerate.

• The speed of an object in a given direction.

• The mass of an object multiplied by its velocity.

What is momentum?

• The product of an object's mass and its velocity.

• The force applied to an object over time.

• The rate of change of an object's position.

• The energy possessed by a moving object.

What is the formula for calculating force?

• Force = mass + acceleration (F = m + a)

• Force = mass × acceleration (F = ma)

• Force = mass / acceleration (F = m / a)

• Force = mass - acceleration (F = m - a)

How does gravity affect falling objects?

• Gravity causes all objects to accelerate towards the Earth at approximately 9.81 m/s², regardless of their mass.

• Gravity only affects objects with mass greater than 1 kg.

• Gravity causes objects to fall at a constant speed of 9.81 m/s.

• Gravity has no effect on the motion of objects in free fall.

What is the relationship between mass and weight?

• Weight is the force of gravity acting on an object's mass.

• Mass is the amount of space an object occupies.

• Weight is the measure of how much matter is in an object.

• Mass and weight are the same thing.