Question

Which would required greater force accelerating a4kg mass at 5m/sec or a 4kg mass at 4m/sec2​

Answer 1

Let m1 = 4kg a1= 5m/s^2

then F1= m1a1= 4×5= 20N

Now let m2 =4kg and a2 = 4m/s^2

then F2 = m2a2 = 4 ×4 = 16N

Thus F1>F2

Answer 2

hello friends ,

in case 1.

force = mass * acceleration

F = 4 kg * 5m/ sec ^2

F1 = 20 NEWTON

case 2

F2 = 4kg * 4m/ sec^2

F2 = 16 newton

from two cases we conclude that in case 1 that mass = 4 kg and a = 5 m/sec^2 it requires greater force for acceleration .