Forces and Motion EOG

What happens when 2 equal forces act on an object in opposing directions?

• no movement; won't move

• Object will move in the direction of the force

• Object will move in the opposite direction of the force

• the object flies

Tags

NGSS.MS-PS2-2

How is motion affected when forces are unbalanced acting on an object?

• Change the speed, change direction, & cause and object at rest to move or change positions

• change speed

• change directions

• object at rest will move or change positions.

Tags

NGSS.MS-PS2-2

How is motion affected when forces are balanced acting on an object?

•  Keep an object moving at the same speed.

•  Keep an object at rest or not moving

• Both options

• Neither option

Tags

NGSS.MS-PS2-2

Choose the BEST example of balanced forces.

• a car speeding up

• a leaf blowing in the wind

• a car moving at a constant speed

• a tennis ball bouncing back and forth between players.

The 5th graders were playing a game of tug-of-war.  The class was divided equally with half the class on one side of the rope and the other half on the opposite side.  For 5 minutes the students pulled and pulled but neither side could pull the flag to one side or the other.  Choose the description of the forces during the 5th grade tug-of-war.

• The forces were unbalanced in the game.

• The forces were friction, gravity, and chemical energy.

• The students all had the same amount of strength.

• The forces were balanced in the game.

Tags

NGSS.MS-PS2-2

What is a contact force?

• A force that touches the object to make it move or change directions

• force that does not touch the object to make it move or change direction.

What is a non-contact force?

• A force that touches the object to make it move or change directions

• force that does not touch the object to make it move or change direction.

Tags

NGSS.MS-PS2-5

Molly is watching a wind-up toy walking across a table. She observes that the toy covers 1 cm every second for 10 seconds. Which graph do you think most closely represents the toy's  journey across the table?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

Every morning John walks a half mile to school.  One Morning, halfway to school, he stopped to watch a some deer in the field.  When he realized he was late, he ran the rest of the way to school to avoid being late.  Which graph below shows John's speed during his walk to school?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

What can cause a moving object to increase its speed in a forward direction?

• an increase in the mass of the object

• a force pushing on the object from the opposite direction

• a decrease in the mass of the object

• a force that continually acts on the object in the direction the object is moving

Tags

NGSS.MS-PS2-2