Question

which statement describes what a bowling ball that is standing still on a table will do? see slides 9-5-25

○ it will start to move on its own and then fall off
○ it will accelerate on its own if left alone
○ it will remain still because it has too much inertia to move
○ it will not move unless acted on by another force

question 3
1 pts
what does an object with more mass require to accelerate, according to newtons second law of motion? (f = ma) see slides from 9-5-25

○ less speed
○ less force
○ more distance
○ more force

Explanation:

First Question (Bowling Ball on Table)

To determine the correct statement, we use Newton's First Law of Motion (Law of Inertia), which states that an object at rest will remain at rest, and an object in motion will remain in motion with constant velocity, unless acted upon by a net external force.

• The first option is incorrect because a stationary object won’t start moving on its own (no net force to initiate motion).
• The second option is incorrect as acceleration requires a net force; without a force, there’s no acceleration.
• The third option misinterprets inertia: inertia is the tendency to resist changes in motion, not “too much inertia to move.” An object at rest resists moving, but it’s not that it has “too much” inertia to move—rather, it needs a force to overcome inertia.
• The fourth option is correct: A stationary object (like the bowling ball) will not move unless a net external force acts on it, as per Newton’s First Law.

Newton’s Second Law is given by \( F = ma \), where \( F \) is force, \( m \) is mass, and \( a \) is acceleration. Rearranging for force, \( F = ma \). If mass (\( m \)) increases, and we want to maintain the same acceleration (\( a \)) or achieve a given acceleration, the force (\( F \)) must increase (since \( F \) is directly proportional to \( m \) when \( a \) is constant).

• “Less speed” is incorrect because speed is not directly related to the force - mass - acceleration relationship here (acceleration is the rate of change of velocity, not speed alone).
• “Less force” is incorrect; more mass requires more force (not less) to accelerate (from \( F = ma \)).
• “More distance” is incorrect as distance is related to motion over time, not the force - mass - acceleration relationship.
• “More force” is correct: From \( F = ma \), if mass increases, a greater force is needed to produce the same acceleration (or to accelerate it at all).

Answer:

It will not move unless acted on by another force

Question 3 (Newton’s Second Law)