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PHYSICS 122. Lecture One Rectilinear Motion. Rectilinear motion is motion in a straight line. It can be horizontal, vertical (either up or down) or at an angle to the horizontal. Distance Traveled vs. Time. - PowerPoint PPT Presentation
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PHYSICS 122
Lecture One
Rectilinear Motion
• Rectilinear motion is motion in a straight line.• It can be horizontal, vertical (either up or down) or
at an angle to the horizontal.
Distance Traveled vs. Time
• Distance traveled versus time for an object moving in a straight line with no change in either speed or direction.
• We say that the object is moving with a constant acceleration.
Distance vs. Time GraphObject moves at constant speed
T (s) D(m)
0.00 0.00
1.00 5.00
2.00 10.0
3.00 15.0
4.00 20.00
5
10
15
20
25
0 1 2 3 4
Line 1
Line 2
Line 3
T2(sec)
4.00 20.0
Object moving at constant acceleration
T(s) D(m)
0.00 0.00
1.00 5.00
2.00 20.0
3.00 45.00
5
10
15
20
25
30
35
40
45
50
0 1 2 3
D(m)
Line 2
Line 3
D vs T
0
2
4
6
8
10
12
0 1 2 3 4
T(s)
D(m)
D (m)
Line 2
Line 3
Power (D(m))
