Question #9be7f

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Answer 1 · 2016-09-17T09:55:52

$m = 1$ $"kg"$

$a = 20$ $"m s"^(- 2)$

We must first use the fact that weight is the product of mass and gravitational acceleration: $W = m g$

$=> 9.8$ $"N"$ $= m cdot 9.8$ $"m s"^(- 2)$

$=> 9.8$ $"kg" cdot "m s"^(- 2)$ $= m cdot 9.8$ $"m s"^(- 2)$

$=> m = 1$ $"kg"$

Then, using $F = m a$ :

$=> 20$ $"N"$ $= 1$ $"kg"$ $cdot a$

$=> 20$ $"kg" cdot "m s"^(- 2)$ $= 1$ $"kg"$ $cdot a$

$=> a = 20$ $"m s"^(- 2)$