Question

Lillle is running. She increases her initial speed of 30 km/h to 40 km/h so she

Answer 1

Answer

$200km {h}^{ - 2}$

Explanation

$Acceleration = \frac{final \: \: \: velocity - initial \: \: velocity }{time} \\ = \frac{(40 - 30)km {h}^{ - 1} }{0.05h} \\ = \frac{10}{0.05} \\ = 200km {h}^{ - 2}$

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Answer 2

• initial velocity=u=30km/h
• Final velocity=v=40km/h
• Time=t=0.05h

$\\ \sf\longmapsto Acceleration=\dfrac{v-u}{t}$

$\\ \sf\longmapsto Acceleration=\dfrac{40-30}{0.05}$

$\\ \sf\longmapsto Acceleration=\dfrac{10}{0.05}$

$\\ \sf\longmapsto Acceleration=200km/h^2$