Առաջադրանքներ Վ.Ի. Լուկաշիկի գրքից 116-ից 120

116

v1=15 մ/վ

v2=72 կմ/ժ

v1-ն է մեծ,թե v2-?

72կմ/ժ=72×1000մ/1/3600վ=20մ/վ

v1<v2

117

t=5,30ժ

s=99կմ

vմիջ-?

vմիջ=99կմ/5,30ժ=99×1000մ/330×60ր=5մ/վ

118

t=3ժ

s=20կմ
vմիջ-?

vմիջ=20կմ/3ժ=6,6կմ/ժ

119

s=20կմ

t1=5ժ

t2=2ժ

t3=22ր

t4=1,4ր

v1,v2,v3,v4-?

v1=20×1000մ/5×3600ժ=1,1մ/վ

v2=20×1000մ/2×3600ժ=2,7մ/վ

v3=20×1000մ/22×60ր=15,1 մ/վ

v4=20×1000մ/1,4×60ր=238 մ/վ

120

t1=17:00

s1=101000կմ

t1=22:00

s2=15200կմ

vմիջ-?

22-17=5

152000-101000=5100 կմ

51000կմ/5ժ=10200կմ/ժ

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