Answer:
60 000 J
Explanation:
The PE will be converted to KE entirely (if the lowest point is ground level)
Initial speed(u)= 0 m/s (Ball is dropped)
time(t)= 0.75 s
acceleration(a)= 10 m/s² (gravity)
Final speed(v)= u+at
v=0+(10)× 0.75
v=7.5 m/s
Speed is 7.5 m/s
In my opinion I think the answer is C you don't have to choose C
