Answer :

D3xt3R
[tex]F_r=m*a[/tex]

[tex]F_r=50*1.5[/tex]

[tex]\boxed{\boxed{F_r=75~N}}[/tex]
AL2006
Newton's second law of motion:  Force = (mass) x (acceleration)

If the mass of the block is 50 kg, then the force needed to accelerate it
at the rate of 1.5 m/s² is

Force= (50) x (1.5) = 75 newtons