Can someone please help me with science

The mass is one of the factors affecting gravitational field strength.

Weight (Force) = mass × gravitational field strength

= 0.10 × 10 (10 is the fixed gravitational field strength on Earth)

= 1.0 N

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

f=ma newton's second law 7x8=56n