Which of the following are examples of 1-D motion?

a) A person pacing back and forth down a hallway in a straight line

b) An airplane traveling from Boise to Seattle

c) A student walking from Boone to KAIC

d) A car driving on a straight road

Answer: a, d

Explanation:

A - eaven if the direction changes it's still 1D

B - an airplane always needs more than 1D for take off and landing

C - it isn't likely to get there by an straight way without any land relief

D - a car in a straight road its 1D if the load has no land relief.