Incline Planes

The longer the inclined plane, the ___________________ to move the object

• the less input force you need
• the more input force you need
• the more output force you need
• the less output force you need

Tags

NGSS.MS-PS2-2

A flat, sloped surface is called a(n)...

• Lever
• Screw
• Fulcrum
• Inclined Plane

What is a disadvantage of using an inclined plane to lift a heavy object?

• The object must be moved a greater distance.
• It takes less effort to move the object.
• Many objects are difficult to lift straight up.
• Heavy object usually take up more space.

Students pulled the same mass up an inclined plane that was 20 cm, 30 cm, and 40 cm long. Each time, they used a spring scale to measure the force needed to pull the mass up the inclined plane. What did they conclude?

• Less force was needed on the 20 cm plane
• More force was needed on the 40 cm inclined plane.
• The least amount of force was needed on the 40 cm inclined plane.
• The least amount of force was needed on the 30 cm inclined plane.

Tags

NGSS.MS-PS2-2

An inclined plane reduces the amount of force needed to move an object by - 

• increasing the distance the object moves.
• transferring more of the force to the object
• reversing the direction the object is moved.

Which of the following decreases when an object is moved using an inclined plane?

• The distance the object moves.
• The pull of gravity on the object.
• The force needed to move the object.
• The amount of space the object occupies.

Tags

NGSS.MS-PS3-2

Friction acts in a direction_______ to the direction of an object's motion.

• unrelated
• equal
• opposite
• perpendicular

 The unit for force is _____. 

• A.  Neutrons 
• B.  Newtons
• C.  Tons
• D.  Inches 

A force exerted over a distance to move an object is ______________________.

• power
• work
• momentum
• Watt

Tags

NGSS.MS-PS3-5

Which best describes the role friction plays in the operation of a bicycle?

• Friction makes the bike go faster.
• Friction keeps the bike from stopping.
• Friction turns the bike in a new direction.
• Friction helps the bike slow down and stop.

Tags

NGSS.MS-PS3-5