Stemscopes Segment 3D Assessment

What does Newton's Third Law State?

• For every action there is a Jedi using the force

• For every action there is an equal and opposite reaction

• For every force action there is a different force reaction

• For every action there is an unequal and opposite reaction

Tags

NGSS.MS-PS2-1

A child pushes a wall with a force of 35 newtons. What is the force from the the wall to the child, and what is its direction?

• 35N and the same direction

• 35N and the opposite direction

• 70N and the same direction

• 70N and the opposite direction

Tags

NGSS.MS-PS2-1

When pressing down on a table, why does your hand not go straight through the table?

• The table is not exerting any force.

• You are pressing down with the same amount of force that the surface is pressing up.

• You are pressing down with a different amount of force than the surface is pressing up.

• You aren't strong enough.

Tags

NGSS.MS-PS2-2

Which of the following is another name for Newton's Third Law?

• The law of action-reaction

• The law of speed

• The law of inertia

• The law of force and acceleration

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is the reaction force to a foot pushing down on the floor?

• The foot going through the floor
• The floor pushing back against the foot
• The floor breaking to the foot

Tags

NGSS.MS-PS2-2

What is the boundary for the system in the picture?

• The area in one of the circles on the ice

• The seating area

• The wall around the ice rink

• What is a boundary?

An object's change in position over time is its

• motion

• interaction

• force

• law

Tags

NGSS.MS-PS2-2

For action-reaction forces, do the forces cancel each other out?

• Yes

• No

Tags

NGSS.MS-PS2-1

A 300-N girl standing on a dock exerts a force of 75 N on a sailboat as she pushes it away from the dock. How much force does the sailboat exert back on the girl?

• 300N

• 225N

• 75N

• 375N

Tags

NGSS.MS-PS2-1

Ishaan pushes a box with a force of 17 N to the left. Aviana pushes the same box, from the opposite side, with a force of 12 N to the right. Which of the following describes the force and motion of the box? ***Challenge Question***

• The box is accelerating (moving) to the left with a net force of 5N

• The box is accelerating (moving) up with a combined force of 25N

• The box is accelerating (moving) to the right with a net force of 5N

• The box is unable to accelerate

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2