Answer:
607.5 m/s
Step-by-step explanation:
K.E. = 1/2 m v^2
mass= kg
m= 15
velocity= m/s
v= 9
now substitute the variables
1/2 (15) (9)^2
first square the 9
(9)^2 = 9 times 9 = 81
1/2 (15) (81)
now multiply 15 and 81
15 times 81= 1215
1/2(1215)
now divided 1215 by 2
1215/2= 607.5 m/s
