Balance and Unbalanced Force

The pictures shows a car traveling with constant motion. If an unbalanced force were applied to the car, each of the following occur EXCEPT-

• change in direction

• increasing speed

• decreasing speed

• constant speed

The diagram shows an airplane as it flies forward through the air. Based on the information provided, the airplane is-

• moving to the right at a constant speed

• moving to the right at an increasing speed

• moving to the left at a constant speed

• moving to the left at an increasing speed

If the ball is moving to the left, which set of forces acting on the ball must be balanced?

• A and B

• A and C

• B and D

• C and D

If the ball is moving to the left, which set of forces acting on the ball must be unbalanced?

• A and B

• A and C

• B and D

• C and D

A mother and daughter press their hands together and then push apart while ice skating. Immediately after they push away from each other, how does the motion of the mother and daughter change?

• The mother moves forward, and the daughter moves backward with a greater speed.

• Both move forward, but the mother moves with a greater speed.

• The mother moves backward, and the daughter moves forward with a greater speed.

• Both move backward, but the daughter moves with a greater speed.

Students dropped a marble through water in a graduated cylinder. During which part or parts of the marble's fall did the marble experience unbalanced forces?

• Part 1 only

• Parts 1 and 2 only

• Part 3 only

• Parts 2 and 3 only

Which of the following statements is true?

• Balanced forces cause a change in motion.

• Unbalanced forces cause a change in motion.

• Forces do not effect the change in motion.

Tags

NGSS.MS-PS2-2

What is the net force?

• 10 N
• 0 N
• 25 N
• 1 N

Tags

NGSS.MS-PS2-2

What is true about this picture?

• the forces are balanced

• the net force is 10N

• The net force is 3 N

• The net force is 7N

Tags

NGSS.MS-PS2-2

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 motion of the cart as a result of the forces?

• It slows down to a stop.
• It accelerates to the left. 
• It continues moving at a constant speed.
• It changes direction and travels in a circular path. 

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1