Force Motion Kinetic Potential

Sheila was coasting on her bicycle across a flat surface and eventually came to a stop. This happened because _______ between the ground and the bicycle tires operated in the _______ direction Sheila was traveling.

• gravity; same
• friction; same
• friction; opposite
• gravity; opposite

Jennifer stands on one side of a filing cabinet and pushes with a force of 60 N. If Nathan wants to help Jennifer demonstrate balanced forces, what does he need to do?

• stand on the same side of the cabinet and push with a force of 60 N in the same direction as Jennifer
• stand on the opposite side of the cabinet and push with a force of 120 N toward Jennifer
• cause the cabinet to move
• stand on the opposite side of the cabinet and push with a force of 60 N toward Jennifer

Tags

NGSS.MS-PS2-2

Friction is a force 

• that helps two objects move faster when they are touching.
• that operates against motion when two objects are touching.
• that exists between any two objects in the universe.
• that gets stronger when two objects move away from each other.

Tags

NGSS.MS-PS2-2

How would the forces on the book best be described?  

• The forces on the book are unbalanced.
• The forces on the book are balanced.
• The forces on the book do not cancel each other out.
• The forces on the book cause a change in the book's motion.

Tags

NGSS.MS-PS2-4

What is a force?

• A force is a substance that reacts with matter.
• A force is a push or a pull.
• A force is equivalent to work.
• A force is a form of energy.

Tags

NGSS.MS-PS2-1

Jim and David decide to arm wrestle to determine who is stronger. Jim uses all of his strength, but David wins and is able to push Jim's hand to the table. The forces acting on Jim's hand during the match

• Are unaffected by David
• Are unbalanced
• Are balanced
• Have a net force of zero

Tags

NGSS.HS-PS2-1

The box in the above picture is falling from the top of a building to the ground. Two major forces are acting on the box as it falls. Which force is represented by the arrow labeled P?  

• magnetism
• air resistance
• gravity
• inertia

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS2-4

With a force of 5 Newtons, Amanda pushes the stack of books to the right. At the same time, Jeremy, her little brother, pushes the stack of books to the left with a force of 10 Newtons.
What is the direction and magnitude of the resulting force?  

• 10 N to the right
• 10 N to the left
• 5 N to the right
• 5 N to the left

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Look at the rock sitting on the hill in the picture above. Gravity should make the rock slide down the hill. What force is acting to balance gravity, keeping the rock in place?

• centripetal force
• momentum
• friction
• gravity

If the forces acting on an object are balanced, the object is

• speeding up or slowing down.
• speeding up or in constant motion.
• at rest or in constant motion.
• at rest or speeding up.

Tags

NGSS.MS-PS2-2