8.6 A Force 2.0

In which sections of the track will this toy car experience unbalanced forces?

• Sections 1 and 3

• Sections 2 and 4

• Sections 1 and 2

• Sections 3 and 4

A baseball has a mass of 0.15 kg, and it is pushed with a net force of 30 N. Based on this information, what is the acceleration of the baseball as it begins to move to the nearest m/s²?

Which of the following objects had the greatest force applied to it?

• An object with a mass of 5 kg and an acceleration of 3 m/s²

• An object with a mass of 11 kg and an acceleration of 1 m/s²

• An object with a mass of 4 kg and an acceleration of 4 m/s²

• An object with a mass of 2 kg and an acceleration of 5 m/s²

A marble is rolled down a smooth, frictionless track. Observations about the speed of the marble are made during 4 different sections of the track and recorded in the table. Based on these observations, when did the marble experience unbalanced forces?

• Section 2 only

• Section 3 only

• Sections 1 and 4

• Sections 1, 3, and 4

A bowling ball is pushed with a force of 84 N. Which expression can e used to find the acceleration of the bowling ball if it has a mass of 7.3 kg?

• 7.3 kg ÷ 84 N

• 7.3 kg x 84 N

• 84 N ÷ 7.3 kg

• 7.3 kg + 84 N

In what direction will the ball roll? What is the net force?

• Right, 1.3 N

• Left, 1.3 N

• Right, 3.7 N

• Left, 3.7 N

Will the ball move left or right? What is the net force?

• Right, 11 N

• Left, 11 N

• Left, 3 N

• Right, 3 N

Will the box move left or right? What is the net force?

• Right, 35 N

• Left, 35 N

• Right, 215 N

• Left, 215 N

During which segments of this graph did the object experience unbalanced forces?

• W only

• X and Z

• W and Y

• Y and Z

Which of the following objects had the greatest force applied to it?

• An object with a mass of 5 kg and an acceleration of 1.0 m/s²

• An object with a mass of 3 kg and an acceleration of 3.0 m/s²

• An object with a mass of 2 kg and an acceleration of 4.0 m/s²

• An object with a mass of 4 kg and an acceleration of 1.5 m/s²