All categories

3 years ago

Does a free falling object fall 2 meters in twice the time as it falls 1 meter?

1 answer:

3 0

A free-falling object has a consrant force acting on it . . . the force of gravity, or what technical experts refer to as its "weight".

Since the object has a constant force acting on it, it must constantly accelerate according to Newton's 2nd law of motion. The way this acceleration reveals itself, the object's speed is constantly increasing.

Since the object is speeding up as it falls, there are a few weird things that happen:

-- It will fall 2 meters in less than double the time for 1 meter.

-- It will fall 3 meters in less than triple the time for 1 meter.

-- It will fall 4 meters in less than quadruple the time for 1 meter, and less than double the time for 2 meters.

-- It will fall 1 meter near the bottom in less time than 1 meter near the top.

None of the choices exactly answers the question.

Choices ' a ' and ' d ' are false statements.

Choice-b is a true statement, but it isn't a "Yes".

Choice-c is kind of confused, but is probably the one you should select.

You might be interested in

Which of the following statements are true?

Tems11 [23]

Answer:

1) A time-varying magnetic field will produce an electric field.

4) A time-varying electric field will produce a magnetic field.

Explanation:

1) A time-varying magnetic field will produce an electric field.

TRUE

time varying magnetic field will produce electric field which is given as

$E = \frac{r}{2}\frac{dB}{dt}$

2) Time-varying electric and magnetic fields can propagate through space only if there is no matter in their path.

FALSE

Time varying electric field and magnetic field will induce each other and it can travel through any medium as well as it can travel without any medium also

3) Electric and magnetic fields can be treated independently only if they vary in time.

FALSE

electric field can be due to stationary charge and magnetic field due to current carrying elements so it is not compulsory to have time varying

4) A time-varying electric field will produce a magnetic field.

TRUE

Time varying electric field will produce magnetic field given as

$B = \frac{\mu_o\epsilon_o A}{2r}\frac{dE}{dt}$

3 0

3 years ago

Join my me et.gogle .etj-dovn-kds

vfiekz [6]

Sweet, Hold On I just need to download le app

5 0

3 years ago

A traveler pulls on a suitcase strap at an angle 36 above the horizontal with a force of friction of 8 N with the floor. If 752

goldenfox [79]

Answer:

71.8 N

Explanation:

T = Tension force in the strap

W = net work done = 752 J

f = force of friction = 8 N

d = displacement = 15 m

θ = angle between tension force and horizontal displacement = 36 deg

work done by frictional force is given as

W' = - f d

Work done by the tension force is given as

W'' = T d Cos36

Net work done is given as

W = W' + W''

W = T d Cos36 - f d

752 = T (15) Cos36 - (8) (15)

T = 71.8 N

8 0

3 years ago

1. A ball is thrown vertically upward.

Ghella [55]

Answer:

The acceleration increases.

Explanation:

hope this helps

4 0

3 years ago

Three short square wood blocks measuring 3.5 per side support a machine weighing 29500 lbs. What is the compressive stress in th

Ilya [14]

Answer:

D. 803 lbs

Explanation:

In order to find the compressive stress on all three blocks we first need to find the normal surface area of each:

Surface Area of 1 Block = 3.5 x 3.5

Surface Area of 1 Block = 12.25

Surface Area of all 3 Blocks = A = 3 x 12.25

Area = 36.75

Now, the stress is given by the following formula:

Stress = Force/Area

Stress = 29500 lbs/36.75

Stress = 802.72 lbs

Hence, the correct option will be:

4 0

4 years ago