Which would require a greater force-accelerating a $2$ kg mass at $5$ m $S^{- 2}$ or a $4$ kg mass at $2$ m $S^{- 2}$ ?

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Solution

Force $F = m a$
(1) : $F_{1} = m_{1} a_{1} = 2 \times 5 = 10 N$
(2) : $F_{2} = m_{2} a_{2} = 4 \times 2 = 8 N$
So, 2 kg will require greater force.

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Which would require a greater force-accelerating a 2kg mass at 5m S−2 or a 4 kg mass at 2m S−2?

Force F=ma(1) : F1=m1a1=2×5=10 N(2) : F2=m2a2=4×2=8 NSo, 2 kg will require greater force.

Which would require a greater force-accelerating a $2$ kg mass at $5$ m $S^{- 2}$ or a $4$ kg mass at $2$ m $S^{- 2}$ ?

Force $F = m a$
(1) : $F_{1} = m_{1} a_{1} = 2 \times 5 = 10 N$
(2) : $F_{2} = m_{2} a_{2} = 4 \times 2 = 8 N$
So, 2 kg will require greater force.