All categories

3 years ago

What is the motion of an apple when it falls from a tree ? a)Constant b)accelerating c)decelerating d)zero

Physics

1 answer:

Firdavs [7]3 years ago

5 0

The motion of an apple when it falls from a tree is

b) Accelerating

The motion of apple is when it falls from a tree is the case of free fall.

During free fall , the initial velocity of the apple or any object is zero but it gains some velocity due to gravitatonal acceleration .

You might be interested in

Identify the following physical quantities as scalars or vectors.

34kurt

Position displacement velocity acceleration are vectors and the rest are scalars

6 0

4 years ago

Read 2 more answers

The half-life of plutonium 239 is 24,200 years. Assume that the decay rate is proportional to the amount. Determine the amount o

kotykmax [81]

Answer:

time taken is equal to 14,156 years

Explanation:

we know,

$Y=Ae^{-kt}$

at t = 0

Y(0) = A

given that half life of plutonium 239 = 24,200

$\dfrac{A}{2}=Ae^{-kt}\\0.5=e^{-kt}\\k\times 24200 = ln(2)\\k = \dfrac{ ln(2)}{24200}$

$Y=Ae^{-kt}$

$\frac{3}{2} = e^{-kt}\\ln(1.5)=-\dfrac{ ln(2)}{24200}\times t\\t=-\dfrac{ln(1.5)\times 24200}{ ln(2)}\\t=14,156 \ years$

hence time taken is equal to 14,156 years

5 0

3 years ago

A question to think about on units: Suppose we wanted to exchange scientific information with a newly discovered species of inte

lubasha [3.4K]

Answer:

b. The speed of light is 2.99792458 x 10^8 meters/second.

Explanation:

Speed of light is a universal constant and its value is same throughout the universe . So alien living near Alpha Centauri will quickly understand about it . But other statements are not universal . Mass of electron can vary as per relativistic formula of Einstein . Similarly , mass of proton can also vary according to relativistic concept . It depends upon the velocity of particle . So, the ratio of mass of proton and mass of electron will also vary from one star to another .

7 0

3 years ago

A sound wave can be considered as a displacement wave or a pressure wave? What phase difference exists between the displacement

netineya [11]

Where the displacement is a maximum the pressure is a minimum.
Where the displacement is zero, the pressure is a maximum.

3 0

4 years ago

Odina walked down the hall at school from the cafeteria to the band room, a distance of 100.0m. A class of physics students

Nata [24]

Find distance she traveled:

100m -25m = 75m

58 seconds / 2 second intervals = 29

29 x 2.6m = 75.4 meters total.

if the distance wasn’t rounded the statement was False.

Answer: False

7 0

3 years ago

Read 2 more answers

What is the motion of an apple when it falls from a tree ? a)Constant b)accelerating c)decelerating d)zero​

What is the motion of an apple when it falls from a tree ? a)Constant b)accelerating c)decelerating d)zero