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wel
3 years ago
15

How fast is a ball going when it hits the ground after being dropped from a

Physics
2 answers:
Alex3 years ago
5 0

Answer:

16 m/s.

Explanation:

potential energy = kinetic energy.

mgh = ½mv².Cancelling m from both sides,

gh = ½ v².

9.8*13 = ½ v²

2(127.4) = v²

v² = 254.8

v = √254.8

v = 15.96 ~ 16m/s.

xxTIMURxx [149]3 years ago
3 0

Answer:

v = 16.1 m/s

Explanation:

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SVETLANKA909090 [29]

Answer: velocity

Explanation: Hope this helps :)

8 0
3 years ago
if an object's density is decreasing but its mass stays constant, what must be true of the object's volume?
astra-53 [7]
<h2>Answer</h2>

The volume will be <u>increased</u>

<h2>Explanation</h2>

Look at the formula

Density = Mass/Volume

If the mass increase the density will be increased because of their direct relationship. But in the case of constant mass. The volume increase the density will decrease because there is an inverse relationship exists between them. In the inverse relationship, the two objects perform differently. for example, if you are going to inflate the balloon, its volume will increase but density decrease

8 0
3 years ago
True or False: If your gas pedal jams, you should turn the key to lock to lock the steering wheel.
Bond [772]

Answer:False

Explanation:

Turn the key to lock is not advisable as it lock the steering wheel and may create a dangerous situation.

Following steps can be taken in this situation

  • Try to press the brake to stop the vehicle
  • Shift gear to neutral in order to cease the acceleration of car.
  • Try to lift the gas pedal in order to decrease the velocity of car.
5 0
3 years ago
Read 2 more answers
A hailstone traveling with a velocity of 43 meters/second comes to a virtual stop 0.28 seconds after hitting water. What is the
Blizzard [7]
I think its "a". but im not sure.
4 0
3 years ago
Read 2 more answers
Which excited electron has the lowest energy?
bearhunter [10]

Answer:

The lowest energy of electron is the ground state.

Explanation:

4 0
3 years ago
Read 2 more answers
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