Force and Motion

The graph to the right shows the movement of an object at several points in time.  (S8P3a) What is the  average speed of the object?

• .5 m/m
• 2 m/m
• 25 m/m
• 50 m/m

Tags

NGSS.MS-PS3-1

Which of the following represents the velocity of a moving object?  (S8P3a)

• 40
• 40 m north
• 40 m/s
• 40 m/s north

The graph to the right shows the speed of a vehicle over time.  (S8P3a)  
How far did the vehicle travel during the first two seconds?

• 0.2 m
• 5 m
• 10 m
• 20 m

Tags

NGSS.MS-PS3-1

Two students are pushing a cart, as shown to the right.  (S8P3b)  
The cart will move as if it were being acted upon by a single force with a magnitude of

• 50 N
• 150 N
• 200 N
• 350 N

Tags

NGSS.MS-PS2-2

If acceleration decreases while the force stays the same then the mass must have:  (S8P3b)

• Increased
• Decreased
• Stayed the same

Tags

NGSS.MS-PS2-2

Four forces are acting on a box, as shown to the right.  (S8P3b) This box will increase in speed

• downward and to the left
• downward and to the right
• upward and to the right
• upward and to the left

Tags

NGSS.MS-PS2-2

Which of the following is true about the motion of the trains (shown in the graph to the right). Assume that both trains are moving in straight lines.  (S8P3a)

• Both trains are moving with a constant velocity
• Train “A” is moving with a constant velocity while the velocity of train “B” is increasing with time.
• Both trains have velocities that are increasing with time.
• Train “B” is moving with a constant velocity while the velocity of train “A” is increasing with time.

A race car is traveling around an oval track at a constant speed. At which point on the oval track does the race car accelerate? (Use Figure 2 to the right).  (S8P3a)  

• The car accelerates at point A.
• The car accelerates at point B.
• The car accelerates at point C.
• The car never accelerates.

Tags

NGSS.MS-PS2-2

The moon is attracted to the Earth so we know that…  (S8P3b)

• the Earth is repelled by the moon.
• the Earth is attracted to the moon.
• the moon has no effect on Earth.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Shaina uses a shovel to dig a hole in order to plant a tree. A shovel is an example of a compound machine because it is made out of what two simple machines?  (S8P3c)

• wheel and axle & lever
• lever & wedge
• screw & wedge
• inclined plane & wedge