Metres per second (m/s) may seem inconspicuous, but it plays a critical role in understanding speed and velocity in scientific contexts. The unit underpins numerous fundamental concepts in physics and engineering, such as calculating the speed of sound at approximately 343 m/s in air at room temperature. This speed metric is also central to space exploration, where spacecraft velocity is often measured in meters per second to ensure precision in navigation and successful missions.
Beyond Earth, Jupiter’s moon, Io, erupts volcanic plumes that reach speeds of over 1,000 m/s, showcasing this unit’s application in celestial phenomena. Transitioning to daily life, elite athletes can clock speeds around 10 m/s during sprints, a testament to human capability. By providing a consistent metric, meters per second serves as a universal bridge across varied disciplines and contexts.
The mile per hour, commonly abbreviated as mph, is a unit of speed originating from the British imperial system and widely used in the United States and the United Kingdom. It’s fascinating to know that the concept of mph has historical significance dating back to the invention of the first automobiles in the late 19th century. The iconic cars of the 1920s, often called “classic cars,” were among the first to publicly advertise their capabilities in mph, including models like the Ford Model T, which had a top speed of about 45 mph.
Interestingly, mph is still the primary speed measurement unit for most road signage in countries such as the US and the UK, even while the rest of the world predominantly uses kilometers per hour (kph). The land-speed record attempts, including those made with the supersonic car “ThrustSSC,” which achieved an astonishing 763 mph in 1997, also emphasize the significance of this unit in measuring extreme speeds.
Metres per second | Miles per hour |
---|---|
0
m/s
|
0
mph
|
1
m/s
|
2.23694
mph
|
2
m/s
|
4.47387
mph
|
3
m/s
|
6.71081
mph
|
4
m/s
|
8.94775
mph
|
5
m/s
|
11.18468
mph
|
6
m/s
|
13.42162
mph
|
7
m/s
|
15.65855
mph
|
8
m/s
|
17.89549
mph
|
9
m/s
|
20.13243
mph
|
10
m/s
|
22.36936
mph
|
11
m/s
|
24.6063
mph
|
12
m/s
|
26.84324
mph
|
13
m/s
|
29.08017
mph
|
14
m/s
|
31.31711
mph
|
15
m/s
|
33.55404
mph
|
16
m/s
|
35.79098
mph
|
17
m/s
|
38.02792
mph
|
18
m/s
|
40.26485
mph
|
19
m/s
|
42.50179
mph
|
20
m/s
|
44.73873
mph
|
21
m/s
|
46.97566
mph
|
22
m/s
|
49.2126
mph
|
23
m/s
|
51.44953
mph
|
24
m/s
|
53.68647
mph
|
25
m/s
|
55.92341
mph
|
26
m/s
|
58.16034
mph
|
27
m/s
|
60.39728
mph
|
28
m/s
|
62.63422
mph
|
29
m/s
|
64.87115
mph
|
30
m/s
|
67.10809
mph
|
31
m/s
|
69.34503
mph
|
32
m/s
|
71.58196
mph
|
33
m/s
|
73.8189
mph
|
34
m/s
|
76.05583
mph
|
35
m/s
|
78.29277
mph
|
36
m/s
|
80.52971
mph
|
37
m/s
|
82.76664
mph
|
38
m/s
|
85.00358
mph
|
39
m/s
|
87.24052
mph
|
40
m/s
|
89.47745
mph
|
41
m/s
|
91.71439
mph
|
42
m/s
|
93.95132
mph
|
43
m/s
|
96.18826
mph
|
44
m/s
|
98.4252
mph
|
45
m/s
|
100.66213
mph
|
46
m/s
|
102.89907
mph
|
47
m/s
|
105.13601
mph
|
48
m/s
|
107.37294
mph
|
49
m/s
|
109.60988
mph
|
50
m/s
|
111.84681
mph
|
51
m/s
|
114.08375
mph
|
52
m/s
|
116.32069
mph
|
53
m/s
|
118.55762
mph
|
54
m/s
|
120.79456
mph
|
55
m/s
|
123.0315
mph
|
56
m/s
|
125.26843
mph
|
57
m/s
|
127.50537
mph
|
58
m/s
|
129.7423
mph
|
59
m/s
|
131.97924
mph
|
60
m/s
|
134.21618
mph
|
61
m/s
|
136.45311
mph
|
62
m/s
|
138.69005
mph
|
63
m/s
|
140.92699
mph
|
64
m/s
|
143.16392
mph
|
65
m/s
|
145.40086
mph
|
66
m/s
|
147.6378
mph
|
67
m/s
|
149.87473
mph
|
68
m/s
|
152.11167
mph
|
69
m/s
|
154.3486
mph
|
70
m/s
|
156.58554
mph
|
71
m/s
|
158.82248
mph
|
72
m/s
|
161.05941
mph
|
73
m/s
|
163.29635
mph
|
74
m/s
|
165.53329
mph
|
75
m/s
|
167.77022
mph
|
76
m/s
|
170.00716
mph
|
77
m/s
|
172.24409
mph
|
78
m/s
|
174.48103
mph
|
79
m/s
|
176.71797
mph
|
80
m/s
|
178.9549
mph
|
81
m/s
|
181.19184
mph
|
82
m/s
|
183.42878
mph
|
83
m/s
|
185.66571
mph
|
84
m/s
|
187.90265
mph
|
85
m/s
|
190.13958
mph
|
86
m/s
|
192.37652
mph
|
87
m/s
|
194.61346
mph
|
88
m/s
|
196.85039
mph
|
89
m/s
|
199.08733
mph
|
90
m/s
|
201.32427
mph
|
91
m/s
|
203.5612
mph
|
92
m/s
|
205.79814
mph
|
93
m/s
|
208.03508
mph
|
94
m/s
|
210.27201
mph
|
95
m/s
|
212.50895
mph
|
96
m/s
|
214.74588
mph
|
97
m/s
|
216.98282
mph
|
98
m/s
|
219.21976
mph
|
99
m/s
|
221.45669
mph
|
100
m/s
|
223.69363
mph
|
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