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
scoundrel [369]
3 years ago
5

URGENT FOR FINAL

Physics
1 answer:
uranmaximum [27]3 years ago
3 0

Answer:

I need this 2

Explanation:

You might be interested in
A Neglecting air resistance, a ball projected straight upward so it remains in the air for 10 seconds needs an initial speed of
ololo11 [35]

Answer:

The initial velocity is 50 m/s.

(C) is correct option.

Explanation:

Given that,

Time = 10 sec

For first half,

We need to calculate the height

Using equation of motion

v^2=u^2+2gh

h =\dfrac{v^2}{2g}....(I)

For second half,

We need to calculate the time

Using equation of motion

h =ut+\dfrac{1}{2}gt_{2}^2

h=0+\dfrac{1}{2}gt_{2}^2

t_{2}=\sqrt{\dfrac{2h}{g}}

Put the value of h from equation (I)

t_{2}=\sqrt{\dfrac{2\times v^2}{g^2}}

t_{2}=\dfrac{v}{g}

According to question,

t_{1}+t_{2}=10

t_{1}=t_{2}

Put the value of t₁ and t₂

\dfrac{v}{g}+\dfrac{v}{g}=10

\dfrac{2v}{g}=10

v=\dfrac{10\times g}{2}

Here, g = 10

The initial velocity is

v=\dfrac{10\times10}{2}

v=50\ m/s

Hence, The initial velocity is 50 m/s.

3 0
3 years ago
Is altitude abiotic or biotic or neither SCIENCE WORK NEEDED BY 11:59 HELP HELP HLEP
trapecia [35]

Answer:

abiotic

Explanation:

goggle:)))))))

6 0
2 years ago
When a body is moving with a uniform velocity, the acceleration is ___?
denis23 [38]
<span>According to the formula : 
</span><span>a=<span><span>ΔV / </span><span>ΔT
</span></span></span><span>When a body is moving with a uniform velocity, the acceleration is zero. That's it. You should remember, that velocity is not constant whereas speed is constant.</span>
4 0
3 years ago
The engine of a 2000 kg Mercedes going up Pike’s Peak delivers energy to its drive wheel at the rate 100 kW . Neglecting air res
kykrilka [37]

Answer:

v = 10 m/s

Explanation:

given,

Mass of Mercedes engine = 2000 Kg

Power delivered = 100 kW

angle made with horizontal = 30°

acceleration due to gravity =  10 m/s²

largest speed car can sustain = ?

we know,

Power = Force x velocity

P = F x v

P = mg sinθ x v

P = mg sin 30° x v

P = 0.5 mg  x v

v = \dfrac{100 \times 10^3}{0.5\times 2000 \times 10}

v = 10 m/s

hence, the maximum velocity is equal to v = 10 m/s

8 0
3 years ago
According to Newton’s First Law of Motion, what will happen to a baseball thrown in outer space
Illusion [34]

Answer:

The baseball will stay in motion until another force act upon it.

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Shuffle a deck of cards and turn over the first card. What is the sample space of the experiment? How many outcomes are in the e
    14·1 answer
  • You toss a ball straight up in the air. Immediately after you let go of it, what force or forces are acting on the ball
    14·1 answer
  • Two small objects each with a net charge of Q (positive) exert a force of magnitude F on each other. We replace one of the objec
    9·1 answer
  • A ball is thrown downward with an initial speed of 7 m / s. The ball's velocity after 3 seconds is m / s. (g = -9.8m / s²)
    6·1 answer
  • In a photoelectric effect experiment, it is observed that violet light does not eject electrons from a particular metal. Next, r
    15·1 answer
  • Felipe believes that whenever the Moon is in the position that is shown from above (top view) in Diagram A, the Moon always look
    9·1 answer
  • Please answer !!!A company wants to install a sensor to monitor the light level in the offices of their buildings. The sensor co
    7·2 answers
  • 12. You and a friend are playing a game of basketball. Explain why the
    15·1 answer
  • How to convert 8 feet to metres​
    10·2 answers
  • Leverrier predicted that an invisible planet was pulling the planet Uranus off its predicted course around the sun. Likewise, hu
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!