ismaelsalas26
Answered

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A person runs at 35 m/s from a standstill. What is their acceleration after 5 sec?

Sagot :

MrRoyal

Answer:

The acceleration is 7m/s^2

Step-by-step explanation:

Given

[tex]u = 0m/s[/tex] -- Initial Velocity

It is 0 because the person starts from a standstill

[tex]v = 35m/s[/tex] -- final velocity

[tex]t = 5s[/tex] -- time

Required

Determine the acceleration

This is calculated using Newton's first equation of motion

[tex]v = u + at[/tex]

Substitute values for v, u and t

[tex]35 = 0 + a*5[/tex]

[tex]35 = 0 + 5a[/tex]

[tex]35 = 5a[/tex]

Divide both sides  by 5

[tex]\frac{35}{5} = a[/tex]

[tex]7 = a[/tex]

[tex]a = 7[/tex]

Hence, the acceleration is 7m/s^2

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