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 ?

Thus, F_{1} = m_{1} a_{1} = 2 kg × 5 m s^{-2} = 10 N;

and F_{2 }= m_{2 }a_{2} = 4 kg × 2 m s^{-2 }= 8 N.

⇒ F_{1} > F_{2}

_{ }Thus, accelerating a 2 kg mass at 5 m s^{-2}would require a greater force.