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Example Questions
Example Question #1 : Physics
Which of the following best illustrates Newton's Second Law?
Possible Answers:
A ball is rolled across a table and does not stop until it hits an area with friction
When two cymbals collide, some kinetic energy is converted into sound
If an object is not accelerating, then the net force on it is zero
As a hammer hits a nail, the nail also exerts a force on the hammer
Correct answer:
If an object is not accelerating, then the net force on it is zero
Explanation:
Newton's Second Law is best represented as an equation, in which the product of mass and acceleration is equal to net force:
By this principle, if there is zero acceleration, then the force must also be zero.
A non-zero acceleration must be present if there is a non-zero net force.
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