Newton's Laws of Motion & Gravity

A hot air balloon exerts a force of 1200 N while lifting a load of 800 N. Which of the following free body force diagrams depicts the forces involved?

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Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Two forces act on the 2 kg box shown below. A 4 N force acts to the right and 6 N force acts to the left. What is the net force acting on the box?

• 10 N to the right
• 2 N to the right
• 10 N to the left
• 2 N to the left

Tags

NGSS.MS-PS2-2

When four forces are applied to a box, the box begins to move. The diagram's arrows show the direction and the magnitude of the four forces acting on the box. In which direction will the box move?

• In the direction arrow P is pointing
• In the direction arrow Q is pointing
• In the direction arrow R is pointing
• In the direction arrow S is pointing

Tags

NGSS.MS-PS2-2

Two people are trying to push a large box across a floor. Each person pushes with an equal amount of force. The total amount of force they exert on the box is 500 newtons. Despite their efforts the box will not move. What is the amount of force exerted by the box on each person?

• 0 N

• 250 N

• 500 N

• 1500 N

Tags

NGSS.MS-PS2-1

A student pushes a hollow ball with a small amount of force causing it to roll quickly across the room. The student then pushes a solid ball with the same amount of force. Which statement demonstrates an understanding of force and its effects on an object?

• The force on both balls was the same; therefore each ball pushes back with the same amount of force.

• The force on both balls was the same; however each ball pushes back with a different amount of force

• The solid ball pushes back with greater force than the hollow ball, because the solid ball has a greater mass

• The hollow ball pushes back with a greater force than the solid ball, because the solid ball moved faster and further

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Susan gently pushes the tip of her fingers against the eraser on her pencil and the pencil does not move. Which of the following figures best illustrates the interaction of forces between Susan's finger and her pencil?

• A
• B
• C
• D

A force acting on each of the objects is shown. What can be concluded about these forces?

• They are the same because they point towards the objects

• They are the same because they have the same magnitude

• They are different because they have different magnitudes

• They are different because they have different directions

Tags

NGSS.MS-PS2-1

Four forces are acting a box, as shown below. The box will increase in speed

• downward and to the left

• Downward and to the right

• Upward and to the left

• Upward and to the right

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

A polar bear walks on sea ice to hunt prey living in the water. Which statement best describes the interaction between the polar bear and the sea ice?

• The force applied by the polar bear is less than the force applied by the sea ice

• The force applied by the polar bear is greater than the total force applied by the sea ice

• The polar bear applies no force to the sea ice because the sea ice applies force to the polar bear

• The polar bear applies a force to the sea ice and the sea ice exerts an equal and opposite force on the polar bear.

Tags

NGSS.MS-PS2-2

You and a friend are moving a box in your classroom. According to the diagram, how will the box react to the forces acting on it.

• The box will fall over

• The box will stay in place

• The box will move toward person A

• The box will move toward person B

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1