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
zlopas [31]
3 years ago
5

If two people are running at the same speed in the same direction. One person is one meter ahead of the other. The person in fro

nt throws a ball to the person slightly behind. As seen by an observer at rest on the ground, is it possible that the ball looks as if it was thrown forward
Physics
1 answer:
Gre4nikov [31]3 years ago
5 0

Answer:yes

Explanation:

You might be interested in
An ice cube of mass 50.0 g can slide without friction up and down a 25.0 degree slope. The ice cube is pressed against a spring
BlackZzzverrR [31]

Answer:

a) s = 0.603\,m, b) s = 2.412\,m

Explanation:

a) The system ice cube-spring is modelled by means of the Principle of Energy Conservation. Let assume that height at the bottom is zero:

U_{g} = U_{k}

m\cdot g \cdot s\cdot \sin \theta = \frac{1}{2}\cdot k \cdot x^{2}

s = \frac{k\cdot x^{2}}{2\cdot m\cdot g \cdot \sin \theta}

s = \frac{(25\,\frac{N}{m} )\cdot (0.1\,m)^{2}}{2\cdot (0.05\,kg)\cdot (9.807\,\frac{m}{s^{2}} )\cdot \sin 25^{\textdegree}}

s = 0.603\,m

b) The distance travelled by the ice cube is:

s = \frac{(25\,\frac{N}{m} )\cdot (0.2\,m)^{2}}{2\cdot (0.05\,kg)\cdot (9.807\,\frac{m}{s^{2}} )\cdot \sin 25^{\textdegree}}

s = 2.412\,m

7 0
3 years ago
Read 2 more answers
What does the potential energy diagram of a chemical reaction tell you
sattari [20]
By looking at the potential energies before and after the reaction, we can tell that the reaction is exothermic (final < initial) or endodermic (final > initial).

Also, the amount of activation energy gives an idea of the external energy required to initiate the reaction (for example, by heating the reactants).
Furthermore, by the same principle, we can also deduce the activation energy for the reverse reaction.

If a catalyst is available, the diagram will show a reduced activation energy, compared to a reaction without catalyst.  However, it will also show that the catalyst does not alter the initial and final energies of the reaction.
4 0
3 years ago
Read 2 more answers
When the termination is a terminal block, care must be taken to ensure a good electrical connection without damaging the conduct
Tamiku [17]

Answer:

When the termination is a terminal block, care must be taken to ensure a good electrical connection without damaging the conductor. Terminals should not be used for more than one

Explanation:

The Terminal block being a modular block, having insulated frame, which can secure more than two wires in it. It has a conducting strip in it. These terminal clocks helps in making the connection safer as well as organised. These terminal blocks are used for power distribution in safer way. Its potential is it can distribute power from single to multiple output. The conductor is used for making it proper contact.

8 0
3 years ago
PROVE THAT G = GM/R² WHERE THE SYMBOLS HAS THEIR USUAL MEANINGS<br>​
butalik [34]

Answer:

g=GM/R^2

Universal Gravutation Constant:

f=GM×m/R^2

Force can be also expressed as

f=m×g

so,

mg=GMxm/R^2

The m gets cancelled so

g=GM/R^2

8 0
3 years ago
Why are lunar calendars not more widely used today?
Nookie1986 [14]
The seasons affect the scheduling of far more events the moon phases do.
6 0
3 years ago
Read 2 more answers
Other questions:
  • You're driving down the highway late one night at 20 m/s when a deer steps onto the road 49 m in front of you. You reaction time
    9·1 answer
  • Which change increases the electric force between objects?
    6·2 answers
  • What did the scientists deduce from the fact that the ants eyes of the desert have multiple lenses
    7·1 answer
  • Please help !!!!!!!!,
    14·1 answer
  • James is lifting a weight of 10 kg. He is doing work
    5·2 answers
  • What is the relation of pressure of a liquid with its depth and density?​
    11·1 answer
  • How does a switch work in a circuit​
    6·1 answer
  • 3. When the procedure is repeated with a third line how will it distinguish whether the location of the center of gravity is acc
    9·1 answer
  • What is the temperature increase of 4.0 kg of water when it is heated by
    14·1 answer
  • A cylinder-piston system contains an ideal gas at a pressure of 1.5 105 pa.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!