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Xelga [282]
3 years ago
11

Mass of trolley (m):

Physics
1 answer:
Nookie1986 [14]3 years ago
4 0

Answer:

ij

Explanation:

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a) distance = (average velocity) x time

    D = \dfrac{v_0 + v_1}{2}\times t

    140 = \dfrac{v_0 + 53}{2}\times 3.6

       v₀ + 53 = 77.78

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b) a = \dfrac{v-u}{t}

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using equation of motion

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