I need help asap I would be happy if you helped me assuming air resistance is negligible, how fast would ball be travelling as it hits the floor after free-falling from rest for 5 second

d.7.5cm is your answer

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.