Combined forces

What is the definition of a force?

• Net force equal 0N and there is no change in the object's motion

• the overall force acting on an object after all forces are combined

• a push or a pull that acts on an object

• The force does not equal 0N, the object accelerates

What do we call a force that has a net force of zero Newtons and the object does not change its motion?

• balanced force

• unbalanced force

• acceleration force

• net force

What do we call a force that causes an object to accelerate?

• net force

• moving force

• acceleration force

• unbalanced force

Tags

NGSS.MS-PS2-2

Arlan tried to pick up a box, but the box did not move. Why not?

• Arlan is not using enough force to overcome the force of gravity on the box.
• Arlan's mass is equal to the mass of the box.
• The forces acting on the box are unbalanced.
• Friction hold the box to the ground.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Two teams play tug of war. The exert a force on each other, and the rope does not move. Which term describes the forces?

• weak
• unbalanced
• strong
• balanced

Cherrish pushes on a box to the left with a force of 50N. At the same time, Carrie pushes on the box, to the right, using a force of 60N. What is the net force on the box?

• 0N
• 10N to the left
• 10N to the right
• 110N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Noah and La Sean stand back to back. Each of them pushes his back against the other, but neither boy moves. Why?

• Both are pushing with unequal forces in different directions.
• Both are pushing with unequal forces in same direction.
• Both are pushing with equal forces in opposite direction.
• Both are pushing with equal forces in same direction.

Tags

NGSS.MS-PS2-1

How will this object move? 

• It won't move. 
• It will move to the right. 
• It will move to the left. 
• It will move up. 

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

How will this object move? 

• It won't move. 
• It will move to the right. 
• It will move to the left. 
• It will move in both directions. 

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

These forces are...

• Balanced

• Unbalanced

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2