Answered

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1:
a change in velocity?
Section 4.4
7. What is the acceleration of a car moving
along a straight-line path that increases its
speed from zero to 100 km/h in 10 s?
S
1
2

Sagot :

  • Initial velocity=u=0m/s
  • Final velocity=100km/h=v=100×5/18=500/18=2.7m/s
  • Time=t=10s

[tex]\\ \tt\longmapsto Acceleration=\dfrac{v-u}{t}[/tex]

[tex]\\ \tt\longmapsto Acceleration=\dfrac{2.7-0}{2}[/tex]

[tex]\\ \tt\longmapsto Acceleration=\dfrac{2.7}{10}[/tex]

[tex]\\ \tt\longmapsto Acceleration=27m/s^2[/tex]

JohnCarl171

Answer:

  • Initial velocity=u=0m/s

  • Final velocity=100km/h=v=100×5/18=500/18=2.7m/s

  • Time=t=10s

⟼Acceleration=tv−u

⟼Acceleration=22.7−0

⟼Acceleration=102.7

⟼Acceleration=27m/s2

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