the object's falling speed
It moves with a constant acceleration downwards. This means that its velocity is increasing at a constant rate.
Approximately, yes. But detailed analysis would require you to take account of its aerodynamic properties, of any rotational motion as it falls, etc.
490 meters
Acceleration is constant.Speed increases linearly with time.Distance increases exponentially with time.
the object's falling speed
It moves with a constant acceleration downwards. This means that its velocity is increasing at a constant rate.
They would fall in same time in a vacuum, but if air is present the ball falls faster due to high air resistance on the leaf
Approximately, yes. But detailed analysis would require you to take account of its aerodynamic properties, of any rotational motion as it falls, etc.
yes
no
it will go straight down because of gravity
In air, yes. In vacuum, no.
490 meters
Acceleration is constant.Speed increases linearly with time.Distance increases exponentially with time.
78.4 m/s
The equation for speed or fast is v=at and the distance is d=1/2 at2 the acceleration is 'a'.