SSA Speed and Motion

6. The diagram below shows forces acting on a model airplane. Both its speed and height above the ground are constant. Which of the following conditions would cause the model airplane to descend toward the ground?

• The lift is equal to the drag.

• The lift is less than the weight.

• The thrust is equal to the weight.

• The thrust is greater than the drag.

Tags

NGSS.MS-PS2-2

7. The graph below represents the time and distance traveled by four different toy cars. Which object had the greater average speed?

• Object A

• Object B

• Object C

• Object D

Tags

NGSS.MS-PS3-1

8. An object moves through space with balanced forces acting on it. Which statement best describes the speed and

direction of the object as long as the forces acting on it remain balanced?

• The sped and direction of the object will both change.

• The speed and direction of the object will remain constant.

• The speed will change, but the direction will remain constant.

• The speed will remain constant, but the direction will change.

9. The displacement-time graph below represents the motion of a cart initially moving forward along a straight line. During which interval is the cart moving forward at a constant speed?

• AB

• DE

• CD

• BC

Tags

NGSS.MS-PS3-1

10. The displacement-time graph below represents the motion of a cart initially moving forward along a straight line. During which interval is the cart stationary?

• AB

• DE

• CD

• BC

Tags

NGSS.MS-PS3-1

12. What happens when the forces applied to an object at rest produce a net force of zero?

• The object will move at a constant speed.

• The object will have a positive acceleration.

• The object will have a negative acceleration

• The object will not move at all.

Tags

NGSS.MS-PS2-2

13. A scientist created the graph below of the motion of three objects. Which of the following is correct about the motion of the objects?

• Object Q is not moving at all.

• Object S is traveling at a faster speed than Object R.

• Object R is increasing in speed by 2 m/s.

• Object R is traveling at a slower speed than Object S.

Tags

NGSS.MS-PS3-1

14. The unusual strength of a glue makes it able to hold a heavy object, or load, as show in the diagram. If the load exerts a strong downward force, the glue -

• destroys the force

• exerts a stronger downward force

• causes the load to accelerate upward

• exerts an upward force equal to the downward force

Tags

NGSS.MS-PS2-4