Grade 8 Forces and Motion

Which of the following best describes a force?

• A push or pull that changes the speed or direction of an object

• The tendency of an object to resist a change in its motion

• Measure of an object's inertia

• Direction and distance from a start point to an end point

Tags

NGSS.MS-PS2-2

Speed is determined based on two factors. What are they?

• Distance and time

• Distance and displacement

• Inertia and distance

• Inertia and displacement

Tags

NGSS.MS-PS3-1

Sarah and Joy are pushing against a block in opposite directions. Sarah is pushing to the right with a force of 10N and Joy is pushing to the left with a force of 12N Which is an accurate statement?

• The block will move to the left with a force of 12N

• The block will move to the left with a force of 2N

• The block will move to the right with a force of 12 N

• The block will move to the right with a force of 2N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Two forces have a net force of zero. What are they most likely called?

• congruent forces

• equal forces

• even forces

• balanced forces

Tags

NGSS.3-PS2-1

An object has two forces applied to it in the same direction. Which of the following is a true statement?

• The forces are added,and the object will move in that direction.

• The forces are added,and the object will move in a different direction.

• The forces are subtracted,and the object will move in that direction.

• The forces are subtracted,and the object will move in a different direction.

Tags

NGSS.MS-PS2-2

The larger the inertia, the ___ the mass.

• slower

• quicker

• smaller

• larger

Tags

NGSS.MS-PS2-2

Which has the greatest inertia?

• a bowling ball

• a golf ball

• a ping pong ball

• a basketball

Tags

NGSS.MS-PS2-2

Two teams are playing tug of war in PE. Team A is pulling to the right with a force of 500N. Team B is pulling to the left with a force of 400N. What will most likely occur?

• Team A will be pulled to the left

• Team A will be pulled to the right

• Team B will be pulled to the right

• Team B will be pulled to the left

Tags

NGSS.MS-PS2-2

Which of the following best describes inertia?

• A push or pull that changes the speed or direction of an object

• The tendency of an object to resist a change in its motion

• Measure on an object's inertia

• Direction and distance from a start point to an end point

Tags

NGSS.MS-PS2-2

You are pulled down toward the ground by which force?

• inertia

• gravity

• sliding friction

• static friction

Tags

NGSS.MS-PS2-4