If there are no air resistance the hailstones would hit the earth at velocities near 350 m/s and melt before they hit the ground.
Free fall.
== == Hailstones are raindrops that freeze as they fall through layers of very cold air. When they fall down from the sky hailstones are usually as big as peas. Sometimes they can be as big as tennis balls - so watch out!
by the force of strong upward air currents
Air resistance
Water vapor form snowflakes when the temperatures in the air are above freezing and the air should be unsaturated. The water vapor to create hailstones start inside a cumulonimbus cloud and super cooled liquid water are caught in a strong updraft. The cycle continues to increase the size of the hailstone, then eventually falls to the earth's surface.
Free fall.
then the vehicle will go faster.
== == Hailstones are raindrops that freeze as they fall through layers of very cold air. When they fall down from the sky hailstones are usually as big as peas. Sometimes they can be as big as tennis balls - so watch out!
the bottle will land in her lap
The parachutist will go down, of course. If gravity is greater than air resistance, then the parachutist would accelerate (his speed would increase). This would increase air resistance, up to the point where gravity and air resistance are in balance.
Without air resistance, there would be no such thing as terminal velocity.
by the force of strong upward air currents
air resistance will increase the time for an object to fall to the ground
Yes resistance would be a push force.
The resistance do obstruct the object. The object always travel slower with air resistance. Air resistance is higher with velocity and the object falling through air would have a limited velocity that it can't go through.
It requires a force to propel an object through air, because of the air resistance. Normally, if there were no air resistance and the object were being propelled on the level with no friction, a constant force would accelerate the object steadily. However, it would require a steady force to propel the object through air even without acceleration. And the faster it went the more resistance it would meet.
Air resistance is neither good nor bad, it is simply a factor. Air resistance costs us in terms of performance, a car with high wind resistance gets lower mileage than one with less; but without air resistance planes would not fly at all.