Unlike an observational study, an experiment can prove:

Physics

2 answers:

dimulka [17.4K]3 years ago

7 0

The answer is A cause and effect

madam [21]3 years ago

3 0

Cause and effect - A

You might be interested in

On the global grid, the prime meridian is at _____.

forsale [732]

The prime meridian is at the longitude line

3 0

3 years ago

Read 2 more answers

What fact does antoine lavoisiers work show

djverab [1.8K]

No fact to show cause you didnt show no work

7 0

3 years ago

You want to close an open door by throwing either a 400-g lump of clay or a 400-g rubber ball toward it. you can throw either ob

gogolik [260]

Refer to the diagram shown below.

Let m = the mass (g) of the door.
Let v = the launch velocity
Let u = the velocity of the door after impact.

Elastic impact (rubber ball):
The rubber ball bounces off the door with presumably elastic impact, which means that both momentum and kinetic energy are conserved.
Conservation of momentum requires that
400v = -400v + mu
Therefore
$u=( \frac{800}{m} )v$

Inelastic impact (clay):
The clay sticks to the door after impact.
Conservation of momentum requires that
400g = (m+400)u
Therefore
$u=( \frac{400}{m+400} )v$

When we compare magnitudes of u for the door, we find that
$u_{1}=( \frac{400}{m} )(2v), \,\, elastic \\\\ u_{2}=( \frac{400}{m+400} )v , \,\, inelastic$
Clearly, the elastic impact creates a greater value of u for the door.

Answer:
The rubber ball creates a larger impulse to the door because the nature of its impact is approximately elastic.