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valkas [14]
3 years ago
14

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A car travelling at 110 km/h decelerates for 4.5 seconds to a final velocity of 45 km/h. Calculate the deceleration of the car.

​
Physics
2 answers:
Tcecarenko [31]3 years ago
4 0
So acceleration = (final velocity - initial velocity)/time

So (fv-iv)/t=a

(45-110)/4.5

Gives you (-130/9)km/h^2

You may have to convert the SI units so just follow my steps and change what must be changed
solniwko [45]3 years ago
3 0

Answer:

Final velicity=45km/h=45×5/18=12.5m/s

Initial velocity =110km/h=110×5/18=30.5m/s

Time=4.5s

Deceleration=v-u/t

=(12.5-30.5)/4.5 m/s²

=18/4.5 m/s²

=4m/s²

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Answer:

0.046

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5 0
3 years ago
A proton moving at 5.00 106 m/s through a magnetic field of magnitude 1.78 t experiences a magnetic force of magnitude 7.40 10-1
aliya0001 [1]

The magnetic part using the Lorentz force is: F = q v x B, 
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You will now look for: 

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So either sin(α) = 0.502 or sin(α) = -0.502 
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6 0
3 years ago
Which change to a circuit is most likely to increase it electrical power
Darina [25.2K]

Answer:

A................

Explanation:

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3 0
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solmaris [256]

Answer:

Your answer would be:
B.) Both carry energy in the form of vibration



Explanation:

Have a great rest of your day
#TheWizzer

4 0
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Sveta_85 [38]
<h2>Answer: dark matter</h2>

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