Answer to Question #271320 in Classical Mechanics for OMAR

Question

Consider two steel balls. Ball 1 has a

weight of 1.5 N. Ball 2 has a weight

of 15 N. Both balls are released

simultaneously from a height of 2.0 m.

Which ball hits the ground first?

a) Ball 1 hits the ground first.

b) Ball 2 hits the ground first.

c) Both balls hit the ground at the

same time.

d) It can’t be determined from the

information provided.

I think that the answer will be (b) because the answer (c) will be right only if ignore the air resistance.

I got an answer before which is (c).

Why is that?

Thank you so much.

Answer 1

$t\sim \sqrt\frac {2s}g,$

there is no informatipn about the air resistance.

NO a) Ball 1 hits the ground first.

NO b) Ball 2 hits the ground first.

NO c) Both balls hit the ground at the

same time.

YES d) It can’t be determined from the

information provided.