Lesson 1 - Describing Motion and Force

_____________ is when an object changes its position compared to another object.

• friction

• motion

• force

• gravity

Tags

NGSS.MS-PS2-2

In science, a ______________ is defined as a push or a pull that changes an object's motion.

• reference point

• friction

• vector

• force

Tags

NGSS.MS-PS2-2

The SI unit used to measure the strength of force is the ___________________.

• Gram

• Newton

• Joule

• Watt

A place or object used for comparison to determine if an object is in motion is called a ________________.

• reference point

• vector

• contact force

• non-contact force

The overall force on an object when all the forces acting on it are combined is called __________________.

• unbalanced force

• balanced force

• net force

• contact force

Tags

NGSS.HS-PS2-1

Motion is considered ___________________ because it is determined by a reference point that can change.

• balanced

• relative

• unbalanced

• gravitational

What two factors are used to describe force?

• direction and velocity

• velocity and strength

• strength and direction

• acceleration and velocity

Which of the following makes a good reference point to determine if an object is in motion?

• a statue in front of a church

• a boy riding his bike

• a cat running across the street

• a plane flying in the air

Forces that produce a nonzero net force

• balanced forces

• unbalanced forces

• both

Tags

NGSS.3-PS2-1

Forces that can not change an object's motion

• balanced forces

• unbalanced forces

• both

Tags

NGSS.3-PS2-1