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GREYUIT [131]
3 years ago
12

What is the momentum of a bus that weighs 13,500,000 grams traveling at 65 mph?

Physics
1 answer:
Goryan [66]3 years ago
5 0

The momentum of the bus is 3.93\cdot 10^5 kg m/s

Explanation:

The momentum of an object is given by

p=mv

where

m is the mass of the object

v is its velocity

For the bus in this problem, we have

m=13,500,000 g = 13,500 kg is its mass

v=65 mph \cdot \frac{1609 m/mi}{3600 s/h}=29.1 m/s is the velocity, converted into SI units

Substituting into the equation, we find the momentum of the bus:

p=(13,500)(29.1)=3.93\cdot 10^5 kg m/s

Learn more about momentum:

brainly.com/question/7973509

brainly.com/question/6573742

brainly.com/question/2370982

brainly.com/question/9484203

#LearnwithBrainly

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Can you please help me with these
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8 0
3 years ago
Shareen finds that when she drives her motorboat upstream she can travelwith a speed of only 8 m/s, while she moves with a speed
ANEK [815]

Let vb be the velocity of the motorboat and let vs be the velocity of the stream.

We know that when she drives upstream the velocity is 8 m/s, in this scenario the velocities point in opposite directions, then we have the equations:

v_b-v_s=8

When she drives downstream the velocites point in the same direction then we have the equation:

v_b+v_s=12

hence we have the system of equations:

\begin{gathered} v_b-v_s=8 \\ v_b+v_s=12 \end{gathered}

Solving the first equation for the velocity of the boat we have:

v_b=8+v_s

Plugging this in the second equation we have:

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5 0
1 year ago
A siren on the top of the police car emits sound at frequency of 823 Hz. The car is approaching a bystander on a sidewalk at spe
statuscvo [17]

Answer:

The bystander will hear a frequency of 931.18 Hz.

Explanation:

let V = 39.5 m/s be velocity of the police car and Fs be the frequency a siren of the police car emits. let v = 0 m/s be the velocity of the bystander and Vs = 340 m/s is the velocity of sound in air.

then, we know that the bystander has to hear a higher frequency than the one emitted and the frequency that the bystander hears is given by the doppler relation:

Fo = [(Vs)/(Vs - V)]×Fs

      = [(Vs)/(Vs - V)]×Fs

      = [(340)/(340 - 39.5)]×(823)

      = 931.18 Hz

Therefore, the bystander will hear a frequency of 931.18 Hz.

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2 years ago
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Answer:

Explanation:

Atoms are the smallest constituent units of matter and they have properties of chemical elements. Atoms can not be broken by any chemical means. Atoms of an elements combine together to form compound. In addition atoms consist nucleus of positively charged protons, neutral neutrons with negatively charged electrons.

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