an object launched at 90m/s at an angle of 50 degrees to the horizontal. what is the magnitude of the velocity at 4 seconds?

hi,

what occurs during a solar eclipse?

there are small tides across earth.

the moon is between earth and the sun.

p.s. im not sure if the first answer is correct because during a solar ecliphse there are spring tides and i dont know if they are the same.

e/c, where e is its total energy

answer(20) psi;

answer///scientific method;