Force and motion

Friction is a force that _______ motion between two objects.

• resists
• aids 
• stops
• creates

What is a type of friction that occurs when air pushes against a moving object?

• surface area
• air resistance
• velocity
• gravity 

If there are two forces going in the same direction how would you find the net force?

• Subtract
• Add
• Neither
• Multiply

Tags

NGSS.MS-PS2-2

Find the net force: 15 N to the right, and another 15 newtons to the right.

• 0 N Right
• 0 N Left
• 30 N Left
• 30 N Right

Tags

NGSS.MS-PS2-2

8 N to the left , and 4 N to the right. Find the net force. Is this balanced 

• 12 N Right  No
• 4 N Left  No
• 12 N Right  Yes
• 4 N Left  Yes

Tags

CCSS.7.NS.A.1A

What is force?

• A push exerted on an object
• A push or pull exerted on an object
• A pull exerted on an object
• Nothing

With unbalanced forces, the object will move in the direction of the _______ force.

• larger 
• smaller 
• equal 

Tags

NGSS.MS-PS2-2

__________ is the sum of all forces acting on an object. It is capable of accelerating a mass. 

• velocity
• gravity
• net force
• distance

Tags

NGSS.MS-PS2-2

What is the unit of measurement for force?

• AMP
• Seconds
• Newtons
• Miles

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