Force and Motion

This type of force resists motion between two surfaces that are pressed together

• contact
• gravity
• friction

If the net force is equal to zero the forces acting on the object are 

• balanced
• unbalanced
• accelerating

The unit of measure for force is

• m/s
• m/s^2
• newton
• kg

Which could be an example of a balanced force?

• An asteroid moving at a constant speed through space 
• A car accelerating from a stop sign
• A box of dishes falling from a counter 
• A rocket taking off 

A wheeled cart is moving to the right at a constant speed.  Two forces of equal magnitude are acting upon the cart. Which of the following best describes the forces and motion of the cart?

• Balanced Forces, Constant Speed
• Balanced Forces, Acceleration
• Unbalanced Forces, Constant Speed
• Unbalanced Forces, Acceleration

Tags

NGSS.MS-PS2-2

The plate shown suddenly moved. Describe the forces and resulting motion.  

• Balanced Forces, Constant Speed
• Balanced Forces, Acceleration
• Unbalanced Forces, Constant Speed
• Unbalanced Forces, Acceleration

Tags

NGSS.MS-ESS3-2

NGSS.MS-PS2-2

Describe the forces and motion at Point 3. 

• Balanced Forces, Constant Speed
• Balanced Forces, Acceleration
• Unbalanced Forces, Constant Speed
• Unbalanced Forces, Acceleration

Tags

NGSS.MS-PS3-1

Describe the forces and motion at Point 1.

• Balanced Forces, Constant Speed
• Balanced Forces, Acceleration
• Unbalanced Forces, Constant Speed
• Unbalanced Forces, Acceleration

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

Describe the forces and motion at Section 2 of the track.

• Balanced forces, Constant Speed
• Balanced Forces, Acceleration
• Unbalanced Forces, Constant Speed
• Unbalanced Forces, Acceleration

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

John took 90 minutes to bicycle to his grandmother's house. His grandmother's house was 6 kilometers away. What was his speed (use your triangle)? (look at units of measure)

• 540 km/hr

• .066 km/hr

• 4 km/hr

• 9 km/hr