Answer:
271.14m/s
Explanation:
The kinetic energy of the 145g is
mass= 0.145kg
velocity= 37m/s
KE=1/2mv^2
KE=1/2(0.145*37^2)
KE=1/2(0.145*1369)
KE=1/2(198.505)
KE=198.505/2
KE=99.25J
Now since the kinetic energy of the 2.7g must be 99.25J
mass =2.7g= 0.0027kg
99.25=1/2(0.0027)v^2
99.25=0.00135v^2
99.25/0.00135=v^2
73518.5185185=v^2
v=√73518.5185185
v=271.14m/s
