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Questions and Answers
According to Newton's third law, when a hammer exerts a downward force on a nail, the nail exerts an equal force on the hammer, directed ___________.
According to Newton's third law, when a hammer exerts a downward force on a nail, the nail exerts an equal force on the hammer, directed ___________.
- sideways
- nowhere
- downward
- upward (correct)
What is the relationship between force and acceleration?
What is the relationship between force and acceleration?
- Directly proportional (correct)
- Inversely proportional
- No relationship
- Depends on the situation
Which way does an object's weight vector always point?
Which way does an object's weight vector always point?
- Horizontally
- Upward
- Vertically downward (correct)
- In the direction of motion
What force prevents an object from sliding on a surface?
What force prevents an object from sliding on a surface?
Which type of friction opposes the motion of a sliding object?
Which type of friction opposes the motion of a sliding object?
What force is exerted by a surface and is perpendicular to the surface?
What force is exerted by a surface and is perpendicular to the surface?
According to Newton's first law of motion, an object that has no forces acting on it will
According to Newton's first law of motion, an object that has no forces acting on it will
According to the text, what is the relationship between forces and motion?
According to the text, what is the relationship between forces and motion?
Which of the following best describes a force?
Which of the following best describes a force?
What is the difference between contact forces and long-range forces?
What is the difference between contact forces and long-range forces?
What happens to air resistance as the speed of an object increases?
What happens to air resistance as the speed of an object increases?
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