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A force of 20 N moves a body with an acceleration of 2 $ms^{-2}$. What is its mass? (10kg)
Solution:
Force = F = 20 N
Acceleration = a = $2 ms ^{-2}$
Mass = m = ?
F = ma
Or $m = \frac{F}{a}$
$m = \frac{20}{2}$ = 10 kg