Answer:
16.2m/s
Explanation:
Kinetic energy=1/2mass*speed squared
KE=1/2mv^2
Data,
KE=85J
M=0.65kg
V=?
85J=1/2(0.65kg)V^2
Cross multiply
2 *85=0.65V^2
Divide both sides by 0.65
170/0.65=v^2
V=✓(170/0.65)
V= 16.172m/s
First option is collect
