Question

After a light turns green , Lesly accelerates to 120 km/hr over 100 meters . What is her acceleration in m/s^2

Answer 1

Answer:

5.55 m/s²

Explanation:

• Initial velocity = 0
• Final velocity = 120 km/hr = 33.3 m/s
• Displacement = 100 m

Using Third law of Motion :-

$\longrightarrow$ 2as = v² - u²

$\longrightarrow$ 2*a* 100 = (33.33 m/s)²-0²

$\longrightarrow$ a = 200a = 1110.89

$\longrightarrow$ a = 1110.89/200

$\longrightarrow$ a = 5.55 m/s²

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