Xavier is roller skating at 14 km/h and tosses a set of keys forward on the ground at 8 km/h. The speed of the keys relative to the ground is

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.

Of is j/kg·k. if a 2.6 kg of isk to k,is ?

Ashot putter releases the shot some distance above the level ground with a velocity of 12.0 m/s, 51.0 ∘above the horizontal. the shot hits the ground 2.08 s later. you can ignore air resistance. how far did she throw the shot?