Answer:
power=work done÷time taken
2×5=10
10÷10=1
ans 1J per second
<span>The speed of the light in the materials. Hope this helps!!</span>
Answer:
-0.01052 m/s
Explanation:
M = mass of ship = 
m = mass of shell = 1100 kg
v = velocity of shell = 550 m/s
u = recoil velocity of ship
As linear momentum is conserved

The recoil velocity of the ship taking the firing direction to be the positive direction is -0.01052 m/s