According to Newton's law of gravitation , all objects should take same time to fall from same height , but it does not happen when we see a paper , a thermocol and a plastic paper to fall .

It happens due to air resistance . In case of paper , this is most pronounced , so it falls slowest . In case of plastic paper , the resistance is least so it falls fastest .

If we squeeze the piece of paper to make a lump so that it does not remain flat , it will fall the fastest , because in this case the air resistance on it becomes the least .

4 0

2 years ago

A softball player moving 3.89 m/s

guapka [62]

Answer:

0.119 s is the correct answer to this question.

Explanation:

As mentioned in the question

U=3.89\ m/s

a=-1.44\ m/s^2

S=4.8\ m

Consider the final speed of the softball covering the distance of 4.8m is v

Now using the equation

$v^2=U^2+2aS$

Putting the value of U, A, S in the previous equation we get

$V^2=3.89^2-2\times 1.44\times 4.8\\V=3.7\ m/s\\$

Now again using the equation

v=U+at

where U=intial velocity, t= time

Substituting the value of v, U, a

$3.7=3.89-1.44\times t\\t=0.119\ s\\$

Hence the slide time is 0.119 s

7 0

2 years ago

Any clue on this one please help

IceJOKER [234]

The third one is your answer

7 0

3 years ago

Who discovered Absolute Temperature​

Who discovered Absolute Temperature