All categories

3 years ago

If a car with a mass of 5Kg, has a momentum of 25kgm/s, how fast is it travelling?

Physics

2 answers:

Fantom [35]3 years ago

8 0

Answer:

5m/s

Explanation:

p=mv, or momentum (p) is equal to mass (m) times velocity (v).

so:

m=5Kg

p=25Kgm/s

v=p÷m

v=25÷5

v=5m/s

hoped this helped :)

Anna35 [415]3 years ago

6 0

Answer:

5hrs

Explanation:

Mass•Accelleration=Momentum (5kg•5hrs=25Mps)

Mass÷Momentum=Accelleration (25Mps÷5kg=5hrs)

You might be interested in

Derive formula of time period of S.H.M.

allochka39001 [22]

Answer:

it os shm and yea because of the smh

Explanation:

smh

3 0

3 years ago

CCL4 is Non polar and NH3 is Polar? Why?

lys-0071 [83]

Answer:

CCL4 is non polar cause' they are equal covalent bonds between carbon and chlorine.
The electronegativity difference between hydrogen and nitrogen is about .9 which is a pretty polar bond. So each N-H bond is definitely polar. But NH3 is also asymmetrical .

6 0

2 years ago

An engineer is designing a runway for an airport. Of the planes that will

ziro4ka [17]

Answer:

704m

Explanation:

Given, initial velocity, u=0m/s and final velocity v=65m/s

Acceleration a=3m/s 2

If d be the allowed length for the runway.

Using formula v*2 −u*2 =2aS

(65)*2−0*2 =2(3)d

⟹ d=65*2 /6=704.16∼704m

8 0

3 years ago

What is the efficiency of a device that takes in 400 J of heat and does 120 J

777dan777 [17]

The efficiency of the device is 30 %

Explanation:

The efficiency of a heat engine is given by:

$\eta = \frac{W}{Q_{in}}$

where

W is the work done by the engine

$Q_{in}$ is the heat in input to the engine

For the device in this problem, we have:

W = 120 J is the work done

$Q_{in} = 400 J$ is the heat in input

Substituting, we find the efficiency:

$\eta=\frac{120}{400}=0.30$

which corresponds to an efficiency of 30%.

Learn more about work:

brainly.com/question/6763771

brainly.com/question/6443626

#LearnwithBrainly

7 0

3 years ago

Read 2 more answers

At what temperature the semiconductor behaves like conductor?

hammer [34]

Answer:

A semiconductor acts like an ideal insulator at absolute zero temperature that is at zero kelvin. It is because the free electrons in the valence band of semiconductors will not carry enough thermal energy to overcome the forbidden energy gap at absolute zero.

5 0

3 years ago