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a 18km/h
b 43,2km/h
c 13.3m/s
d 1,5m/s=5,4
e 17,2m/s=1722,2cm/s
a) 18km/h
b) 43,2km/h
c) 13,3m/s
d) 1,5m/s = 5,4km/h
e) 17,2m/s = 1720cm/s
a, 18km/h=5m/s
b,12m/s=43,2km/h
c,48km/h=\(\dfrac{40}{3}\approx13,33\)m/s
d,150cm/s=1,5m/s=5,4km/h
e,62km/h=\(\dfrac{155}{9}\approx17,22\)m/s=\(\dfrac{15500}{9}\approx1722,22\)cm/s
f,300000km/s=300000000m/s=1080000000km/h
Bạn bấm máy tính casio á ấn \(shift\rightarrow8\rightarrow20\)(20 hoặc 19) nha
\(\left[{}\begin{matrix}45\left(\dfrac{km}{h}\right)=12,5\left(\dfrac{m}{s}\right)\\20\left(\dfrac{m}{s}\right)=72\left(\dfrac{km}{h}\right)\\6\left(\dfrac{km}{h}\right)=100\left(\dfrac{m}{min}\right)\\\left[{}\begin{matrix}400\left(\dfrac{m}{min}\right)=24\left(\dfrac{km}{h}\right)\\3\left(\dfrac{km}{h}\right)=83,\left(3\right)\left(\dfrac{cm}{s}\right)\\\dfrac{750}{s}=\dfrac{km}{h}?????\end{matrix}\right.\end{matrix}\right.\)
1. a) 18km/h = 5m/s
b) 12m/s = 43,2km/h
c) 48km/h=\(21\frac{2}{3}\)m/s
d) 15cm/s = 0,15m/s
= 0,54km/h
2. Đổi : 50km/p = 300km/h ;
60m/s = 216km/h ;
1500cm/h = 0,015km/h
Sắp xếp:
| V4 | 0,015km/h |
| V3 | 30km/h |
| V2 | 216km/h |
| V1 | 300km/h |
Ta có 1m/s=3,6k/h
➜a) 5m/s = 18 km/h b) 72km/h = 20 m/s
b) 15m/s = 5 km/h d) 36 km/h = 10m/s
Giải a)
\(5\left(\frac{m}{s}\right)=18\left(\frac{km}{h}\right)\\ 72\left(\frac{km}{h}\right)=20\left(\frac{m}{s}\right)\)
b)
\(15\left(\frac{m}{s}\right)=54\left(\frac{km}{h}\right)\\ 36\left(\frac{km}{h}\right)=10\left(\frac{m}{s}\right)\)
<3,6km/h=1m/s>
36km/h=10m/s
108km/h=30m/s
15m/s=54km/h
20m/s=72km/h
12000m/h=\(\dfrac{10}{3}\)m/s
180m/min=3m/s
a)18
b)43,2
c)13.3
muốn đổi về km/h về m/s thì chia cho 3,6
a).18km/h=5m/s
b)12m/s=.43,2km/h
c)48km/h=40/3m/s
d)150cm/s=540m/s=1944km/h
e)62km/h=223,2m/s=803,52cm/s