Answer:
well people find a hole on the ground and they can see water and that theu build the well around them but the answer is. C
Answer:
40000÷40=1000 joules is required to work in 40 seconds
I think is c not sure though
Hi there!

Use the following formula to solve:
KE = 1/2mv², where:
KE = kinetic energy
m = mass (kg)
v = velocity (m/s)
Therefore:
KE = 1/2(1500)(30)²
KE = 1/2(1500)(900)
KE = 675000 J