Question

Consider a 1 kg ball and a 6 kg ball of the same size dropped from a height of 3 m at the same time above the ground.

a) If we consider air resistance, do both objects fall or accelerate at the same rate? Explain.

b) If we dropped a 1 kg ball and a 1 kg square plate of dimension 20 cm x 20 cm, do both objects fall or accelerate at the same rate? Explain.

Answer #1

Air resistance on a falling object depends on it's area of cross-section. More the area more the value of air resistance is. Air resistance is always opposite to the motion of the object.

**a)**. 1 kg and 6 kg balls have same size. That
means, they have equal cross-sectional area. Same air resistance
force will act on them. So, they will fall with same rate of the
acceleration.

**b).** 1 kg square plate has larger cross
sectional area. So, it counters the greater air resistance that
makes it fall with the slower rate in compaeison to the 1 kg ball
of smaller area. Therefore, both the objects fall with different
accelerations.

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Both balls will reach the ground with the same speed.
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Please explain procedure

this question by someone by earlier.
consider a .62 kg
basetball that is dropped from a height of 1 metee avove the
floor:
1.What form or forms
of energy does the ball have before it is dropped, if an orgin is
set on the ground? Be explicit and give a value for any energy and
what form or forms of energy does the ball have right before it
makes impact with the ground?
This is the results:
When the ball...

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