Question

Find the mass of a flying discus that has a net force of 1.05 newtons and accelerates at 3.5m/s^2.

Answer 1

$F = m*a$
$1.05N = m*3.5\frac{m}{s^2}}$
$\frac{1.05}{3.5} = m$
$0.3kg = m$

Answer 2

We know, Force = mass * acceleration
Here, f = 1.05 N
a = 3.5 m/s²

Substitute their values, 
1.05 = m * 3.5
m = 1.05 / 3.5
m = 0.3 Kg = 300 g

In short, Your Answer would be 300 gram

Hope this helps!