Forces and Newton's Laws of Motion

What is the difference between mass and weight?

• Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.

• Mass and weight are the same; both refer to the quantity of matter in an object.

• Weight is the amount of matter in an object, while mass is the force of gravity acting on that matter.

• Mass is a measure of an object's volume, while weight is a measure of its density.

What is Newton's 2nd law of motion?

• F = ma, where F is force, m is mass, and a is acceleration.

• F = mv^2, where F is force, m is mass, and v is velocity.

• F = m/a, where F is force, m is mass, and a is acceleration.

• F = m + a, where F is force, m is mass, and a is acceleration.

What is the relationship between mass and acceleration in Newton's 2nd law?

• As mass increases, for a constant force, acceleration decreases.

• As mass increases, acceleration increases for a constant force.

• Mass and acceleration are independent of each other.

• Increasing mass has no effect on acceleration.

What is an example of Newton's 3rd law of motion?

• When you jump off a small boat, the boat moves backward.

• A ball rolling down a hill accelerates due to gravity.

• When you push against a wall, the wall pushes back with equal force.

• A car accelerates when the driver presses the gas pedal.

What is a force?

• A force is a type of energy.

• A force is a push or pull on an object.

• A force is a measure of mass.

• A force is a type of motion.

What is the unit of force?

• Pound (lb)

• Kilogram (kg)

• Newton (N)

• Joule (J)

What is an example of inertia in everyday life?

• A passenger lurches forward in a car when it suddenly stops.

• A ball rolling on the ground eventually comes to a stop due to friction.

• A person feels pushed back into their seat when a car accelerates.

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

What is inertia?

• Inertia is an object's resistance to change in its state of motion.

• Inertia is the force that causes an object to move in a circular path.

• Inertia is the tendency of an object to remain at rest or in uniform motion unless acted upon by an external force.

• Inertia is the measure of an object's mass in relation to its speed.

What does Newton's 1st law of motion state?

• An object at rest remains at rest, and an object in motion remains 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 the formula for calculating force?

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

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

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

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