3) A soccer ball has just been kicked off the edge of the Grand Canyon which has a height of 2,400 meters above the Colorado River at its base. Ignoring air resistance, what is the
velocity of the ball halfway down (1200 meters above the river)? And, what is the
velocity of the ball when it hits the water (when h=0 meters)?

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?

If the wheels lock when braking suddenly the vehicle: a: loses traction b: lose steering wheel ability c: gain speed slightly d: gain steering ability

How many atoms of nitrogen are in the chemical formula ni(w on