Respuesta :

Part (a)

Answer:  87

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Work Shown:

v = u + a*t

v = 7 + 10*8 ... plug in the given values

v = 7 + 80

v = 87

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Part (b)

Answer: 10

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Work Shown:

v = u + a*t

80 = 20 + 6*t .... plug in the given values

80-20 = 6t .... subtracting 20 from both sides

60 = 6t

6t = 60

t = 60/6 .... divide both sides by 6

t = 10

Answer:

first person is write

Step-by-step explanation: