2 years ago

It is possible for an object in free fall to be moving:

1 answer:

6 0

Answer:

backward is the answer beacuse In Newtonian physics, free fall is any motion of a body where gravity is the only force acting upon it.

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To win the game, a place kicker must kick a football from 30m from the goal, and the ball must clear the crossbar which is 3.05

Mashcka [7]

Answer:

Explanation:

Ignore air resistance

The horizontal velocity is

vx =19cos37.2 = 15.134 m/s

The ball travels 30 m in a time of

30 / 15.134 = 1.982 s

In that time, the ball will be at an altitude of

s = vy₀t + ½at²

s = 19sin37.2(1.982) + ½(-9.8)1.982² = 3.5137... m

so the ball clears the bar by

h = 3.5137 - 3.05 = 0.4637... = 0.46 m

7 0

3 years ago

A swimmer standing near the edge of a lake notices a cork bobbing in the water. While watching for one minute, she notices the c

timurjin [86]

Answer:

4Hz (240 cycles/60 seconds = 4 cycles/second)

Explanation:

hope this helped!

5 0

3 years ago

When a theory is disproved by further evidence, which of the following occurs?

Bumek [7]

New data must be found to support it

6 0

3 years ago

Read 2 more answers

Anybody know the answer to this ?

Firlakuza [10]

Answer:

4 ampere

Explanation:

I= v/R

=12/3

= 4 amp

5 0

3 years ago

A friend claims that throwing a baseball up towards the school roof illustrates gravitational potential energy transforming into

Cloud [144]

Answer:

The Statement is wrong because the reverse is the case as it is the kinetic energy that is being transformed to gravitational potential energy.

Explanation:

As your friend throws the baseball into the air the ball gains an initial velocity (u) and this makes the Kinetic energy to be equal to

$KE = \frac{1}{2} mu^2$

Here m is the mass of the baseball

Now as this ball moves further upward the that velocity it gained reduce due to the gravitational force and this in turn reduces the kinetic energy of the ball and this kinetic energy lost is being converted to gravitational potential energy which is mathematically represented as (m×g×h)

as energy can not be destroyed but converted to a different form according to the first law of thermodynamics

Looking a the formula for gravitational potential energy we see that the higher the ball goes the grater the gravitational potential energy.

4 0

4 years ago