Newton's First & Second Laws Video Lessons

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Problem: Which of the following is an example of uniform motion? a. A person at rest starts running in a straight line in a fixed direction b. A car going around a circular track at a constant speed c. A ball dropped from the top of a building d. A hockey puck sliding in a straight line at a constant speed

FREE Expert Solution

Uniform motion refers to motion without a net external force or acceleration. 

Uniform motion is contained in Newton's first law. Acceleration is defined in Newton's second law.

Motion at constant speed in a straight line is the definition of uniform motion.

An object in uniform motion covers equal distances in equal time intervals.

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Problem Details

Which of the following is an example of uniform motion? 

a. A person at rest starts running in a straight line in a fixed direction 

b. A car going around a circular track at a constant speed 

c. A ball dropped from the top of a building 

d. A hockey puck sliding in a straight line at a constant speed

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