The table below shows the position two balls A and B at different times. According to the given observation, which one option defines the motion of the two balls?
Answers
Answered by
5
Answer:
the answer is option B..
Answered by
0
Answer:
4:13
After collision balls exchange their velocities
i.e., v
A
=
2gh
and v
B
=
2g(4h)
=2
2gh
Height attained by A will be h
A
=
2g
v
A
2
=h
But path of B will be first straight line and then parabolic as shown in figure.
Using energy conservation for ball B,
2
1
mv
B
2
=
2
1
mv
2
+mgh or v=
6gh
∴h
B
=h+
2g
v
2
sin
2
60
∘
=h+
4
9h
=
4
13h
Hence,
h
B
h
A
=
13
4
.
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