DC -- Newton's 1st and 2nd Law

Newton's First Law is about ----

• friction

• inertia

• statistics

• vectors

According to Newton's First Law, what is the cause of any change in velocity?

• tension force

• inertia

• a net external force

• a comprehensive internal system

An air hockey table has jets of air to lift the puck from contacting the surface. How does this change the motion of the puck?

• removes the external force of friction

• removes the sliding force

• reduces gravity

• reduces the angle

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-5

A basic feature of all laws of physics ---

• acceleration is universally constant

• all forms of friction have equal value

• the magnitude of gravity is the same everywhere

• generally applicable, or universal laws

Tags

NGSS.MS-PS2-4

How is the inertia of an object measured?

• by it's change in velocity

• by the normal force

• by it's density

• by it's mass

Which has more mass: a kilogram of cotton balls or a kilogram of gold?

• cotton balls

• they are equal

• gold

According to Newton's 2nd Law, a net force causes _____

• surface tension.

• a gravitational constant.

• an acceleration.

• an inertia.

Tags

NGSS.MS-PS2-2

Before you can determine which forces are external, you must _______.

• solve for the unknown variable.

• cancel the units to make sure the system is dimensionally correct.

• resolve the vectors into x- and y- values.

• define the boundaries of the system.

Tags

NGSS.MS-ETS1-1

According to Newton's 2nd Law, acceleration is _________ to the mass.

( F = ma )

• linearly proportional

• inversely proportional

What is weight?

• The gravitational force acting on a mass.

• The quantity of matter, and it does not change in classical physics.

• The amount of space occupied by an object.

• An object's resistance to change in acceleration.

Tags

NGSS.MS-PS2-4