Wilma\'s ball and Betty\'s ball have the same size, but Betty\'s ball is hollow.

Question

Wilma's ball and Betty's ball have the same size, but Betty's ball is hollow. Barney's ball and Fred's ball are scaled down versions of Wilma's ball and Betty's ball respectively. They all place their bowling balls on the same pitch incline and release them from rest at the same time. (Select G-Greater than, L-Less than, E-Equal to, ).

The order of the objects in the diagram is Wilma, Barney, Betty, Fred.

A) The time it takes for Betty's ball to hit the pins is .... that for Fred's ball to hit.
B) The time it takes for Wilma's ball to hit the pins is .... that for Barney's ball to hit.
C) The time it takes for Fred's ball to hit the pins is .... that for Wilma's ball to hit.
D) The time it takes for Betty's ball to hit the pins is .... that for Barney's ball to hit.
E) The time it takes for Barney's ball to hit the pins is .... that for Fred's ball to hit.
F) The time it takes for Wilma's ball to hit the pins is .... that for Betty's ball to hit.

Explanation / Answer

A) E

B) E

C) G

D) G

E) L

F) L

The solid spheres will take less time (have a greater velocity) than the hollow spheres every time.

Time taken by the large solid balls will be equal to the smaller solid balls

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