1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yawa3891 [41]
3 years ago
13

Two objects have the same size and shape, but one is much heavier than the other. When they are dropped simultaneously from a to

wer, they reach the ground at the same time (assuming that there is no air resistance), but the heavier one has a greater
speed
acceleration
none of the above
all of these
Physics
1 answer:
maria [59]3 years ago
6 0

Answer:

None of the above.

The correct answer would be momentum

You might be interested in
Freight car A with a gross weight of 200,000 lbs is moving along the horizontal track in a switching yard at 4 mi/hr. Freight ca
zhenek [66]

Answer: a) 4.7 mi/hr.  b) 86,500 lbs. mi²/Hr²

Explanation:

As in any collision, under the assumption that no external forces exist during the very small collision time, momentum must be conserved.

If the collision is fully inelastic, both masses continue coupled each other as a single mass, with a single speed.

So, we can write the following:

p₁ = p₂ ⇒m₁.v₁ + m₂.v₂ = (m₁ + m₂). vf

Replacing by the values, and solving for vf, we get:

vf = (200,000 lbs. 4 mi/hr + 100,000 lbs. 6 mi/hr) / 300,000 lbs = 4.7 mi/hr

If the track is horizontal, this means that thre is no change in gravitational potential energy, so any loss of energy must be kinetic energy.

Before the collision, the total kinetic energy of the system was the following:

K₁ = 1/2 (m₁.v₁² + m₂.v₂²) = 3,400,000 lbs. mi² / hr²

After the collision, total kinetic energy is as follows:

K₂ = 1/2 ((m₁ + m₂) vf²) = 3,313,500 lbs. mi²/hr²

So we have an Energy loss, equal to the difference between initial kinetic energy and final kinetic energy, as follows:

DE = K₁ - K₂ = 86,500 lbs. mi² / hr²

This loss is due to the impact, and is represented by the work done by friction forces (internal) during the impact.

8 0
3 years ago
A rectangular barge, 5.2 m long and 2.4 m wide, floats in fresh water. Suppose that a 410-kg crate of auto parts is loaded onto
sesenic [268]
<h2>Answer:</h2><h2>The depth of barge float=3 cm</h2><h2>Explanation:</h2>

Length of rectangular barge=5.2 m

Width of rectangular barge=2.4m

Mass of crate=410 kg

Let h be the height of barge float

Volume of barge float=l\times b\times h=5.2\times 2.4\times h=12.48h

Density of water=10^3kg/m^3

Weight of water displaced by barge=Buoyant force=-Weight of horse

Volume\;of\;water\times density\;of\;water\times g=410\times g

12.48h\times 1000=410

h=\frac{410}{12.48\times 1000}=0.03 m

1 m=100 cm

0.03 m=0.03\times 100=3cm

Hence, the depth of barge float=3 cm

<h2 />
4 0
3 years ago
Read 2 more answers
How are momentum and collision related?
Studentka2010 [4]

Answer:

im pretty sure a collision is a transfer of momentum.

Explanation:

hope this helps :)

5 0
3 years ago
a spring of original length 10 cm, Stretches to 12 cm, when a Force of 40 N is applied to It. what is the extension of the sprin
Mila [183]

Answer:

2.6

Explanation:

Since the formula is k=F/X when you criscross it becomes KX=F,10X=26,then over ten which equals 2.6.

8 0
3 years ago
A soccer ball is kicked from point Pi at an angle above a horizontal field. The ball follows an ideal path before landing on the
Nutka1998 [239]

Answer:

A. The horizontal velocity vector points to the right & equals v cos θ.

Explanation:

The motion describes a parabolic path, where the horizontal speed is constant and the horizontal velocity vector always points to the right and equals v*cos θ.

8 0
3 years ago
Other questions:
  • numerical question : what is the required heat to raise the temperature of 2 kg parrafin by 10 Celsius if 44000 joules is requir
    13·1 answer
  • Forces always come in pairs — so each ______ has a reaction
    8·1 answer
  • Grocery store managers contend that there is less total energy consumption in the summer if the store is kept at a low temperatu
    8·1 answer
  • What is frictional force?​
    13·2 answers
  • Calculate the magnitude of the electric field at one corner of a square 2.42 m on a side if the other three corners are occupied
    15·1 answer
  • What will be the gravitational force of two bodies when distance between them is doubled​
    6·1 answer
  • What types of landforms can water form?
    5·2 answers
  • Help Me Please<br>8th grade science, one question ​
    14·1 answer
  • Please help me out (will give brainliest)
    12·2 answers
  • Find the kenetic energy of a car of mass 700kg racing with a velocity of 10m/s
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!