newtons laws test review

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a force.

Front

What is the coefficient of static friction?

Back

The coefficient of static friction (μs) is a dimensionless value that represents the ratio of the maximum static frictional force (Ff) to the normal force (FN) acting on an object. It is calculated as μs = Ff / FN.

Front

How do you calculate the force of friction?

Back

The force of friction (Ff) can be calculated using the formula: Ff = μ * FN, where μ is the coefficient of friction and FN is the normal force.

Front

What is Newton's 1st Law of Motion?

Back

Newton's 1st Law of Motion states that an object at rest will stay at rest, and an object in motion will stay in motion at a constant velocity unless acted upon by a net external force.

Front

What is the formula for calculating the coefficient of friction?

Back

The coefficient of friction (μ) is calculated using the formula: μ = Ff / FN, where Ff is the force of friction and FN is the normal force.

Front

What is the force of friction between a block of ice weighing 950 N and the ground if μ = 0.12?

Back

The force of friction (Ff) is calculated as Ff = μ * FN = 0.12 * 950 N = 114 N.

Front

What does a coefficient of static friction of 0.51 indicate?

Back

A coefficient of static friction of 0.51 indicates that the maximum static frictional force is 51% of the normal force acting on the object.

Front

What is the significance of the normal force in friction calculations?

Back

The normal force (FN) is the force perpendicular to the surface of contact. It is crucial in friction calculations as it directly affects the magnitude of the frictional force.

Front

What is Newton's 2nd Law of Motion?

Back

Newton's 2nd Law of Motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass, expressed as F = m * a.

Front

What is Newton's 3rd Law of Motion?

Back

Newton's 3rd Law of Motion states that for every action, there is an equal and opposite reaction. This means that forces always occur in pairs.