CFA #4

CFA #4

by Alexandra Seabolt

Multiple Choice

• Objects with irregular shapes never fall in a straight line.

• Air currents and gravity applied changing and unbalanced forces to the

  leaf

• The upward force of the air was grater that the downward force of gravity on the leaf.

•  Once the leaf was in motion, it continued moving in the same direction because the forces were balanced.

Multiple Choice

• 4N

• 6N

• 10N

•  14N

Multiple Choice

• A

• B

• C

•  D

Multiple Choice

Some students measure the acceleration of a wheeled cart being acted upon by varied forces. The students record their data in the table above. According to the data table, how much force is acting on the cart when it is accelerating

at 2.6 m/s2?

• 13 N

• 7 N

• 8 N

• 12N

​2-S

• ​What do you need to find in order to solve for the question mark? ...... kg

• ​THEN, you can solve for FORCE.

• ​2.6 x 5 = 13

Multiple Choice

5. Which graph depicts a student walking 4 seconds, stopping for 4 seconds, then walking the rest of the way?

Multiple Choice

• Beach Balls 1 and 3

• Beach Balls 2 and 4

• Beach Balls 1, 2, and 4

• Beach Balls 2, 3. and 4

Multiple Choice

• Away from her push because the wall exerts an equal and opposite force

• Away from her push because the wall exerts a stronger force in the same

  direction

• Same direction of her push because the wall exerts an equal force in the same direction

• Same direction of her push because the wall exerts a stronger and opposite force

Fill in the Blanks

Multiple Choice

• 0.3 m

• 3 m/s

• 10 m/s

• 30 m/s

Multiple Choice

• Destroys the force

• Exerts a stronger downward force

• Causes the load to accelerate upward

• Exerts an upward force that is equal to downward force

Multiple Choice

• Because of friction, the ball continues rolling forward at same speed

• Because of friction, the ball rolls forward at an increased speed

• Because of Inertia, the ball continues to roll forward at same speed

• Because of Inertia, the ball rolls forward at an increased speed

Multiple Choice

• Can accelerate faster than the other 2 vehicles

• Is traveling in the opposite direction from the other 2 vehicles

• Is traveling on a curve in the road

• Needs a large amount of force to move

Fill in the Blanks