Exploring Newton's Laws of Motion

What is inertia?

• The speed at which an object moves

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

• The tendency of an object to change its state of motion

• The force required to move an object

Which of the following best describes Newton's First Law?

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

• The force of gravity is proportional to the mass of the object

• Force equals mass times acceleration

• An object will remain at rest or in uniform motion unless acted upon by a net force

How do you calculate net force according to Newton's Second Law?

• Net force equals acceleration divided by mass

• Net force equals mass times velocity

• Net force equals mass divided by acceleration

• Net force equals mass times acceleration

What is the value of the acceleration due to gravity (small g)?

• 11.81 m/s^2

• 10.81 m/s^2

• 9.81 m/s^2

• 8.91 m/s^2

What is equilibrium in the context of forces?

• When an object is at rest

• When all forces acting on an object are balanced

• When an object is accelerating

• When an object is moving at a constant velocity

According to Newton's Third Law, what happens when you exert a force on an object?

• The object does not exert any force back on you

• The object exerts a smaller force back on you

• The object exerts a larger force back on you

• The object exerts an equal force back on you

What is the normal force?

• A force that acts opposite to the direction of motion

• A force that acts in the direction of motion

• A force that acts perpendicular to the surface

• A force that acts parallel to the surface

In a free body diagram, what does an arrow pointing up usually represent?

• The force of gravity

• The normal force

• The net force

• The tension force

What happens to the tension in a rope if the weight it supports is doubled?

• The tension becomes zero

• The tension doubles

• The tension is halved

• The tension remains the same

How do you determine the acceleration of an elevator with a counterweight?

• By dividing the net force by the total mass

• By multiplying the net force by the total mass

• By subtracting the net force from the total mass

• By adding the net force to the total mass