<< David is swinging his 0.5 m long sling and exerting a centripetal force of 1,250 N. Soon he will hurl the 250 g
rock in the sling at Goliath. What is the velocity of the
rock as it leaves the sling?

1.state2.trash3.the earth

I’m good with pshycology

Year  1936,  lehman predicted that the earths 'inner core' is solid. she observed that the seismic signals during her study were bent and did not pass through instead bouncing back. later it was confirmed that the earth's inner core was solid made up of nickel-iron and had a molten outer core.