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Tatiana [17]
3 years ago
10

A race car travels on a circular track at an average rate of 125 mi/h. The radius of the track is 0.320 miles. What is the centr

ipetal acceleration of the car?
Physics
1 answer:
GREYUIT [131]3 years ago
4 0
The centripetal acceleration of the car is 48,800 mi/h2
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A 70 kg hunter, standing on frictionless ice, shoots a 42 g bullet horizontally at a speed of 590 m/s . Part A Part complete Wha
Kisachek [45]

Answer:

The recoil velocity is 0.354 m/s.

Explanation:

Given that,

Mass of hunter = 70 kg

Mass of bullet = 42 g = 0.042 kg

Speed of bullet = 590 m/s

We need to calculate the recoil speed of hunter

Using conservation of momentum

m_{1}u_{1}+m_{2}u_{2}=m_{1}v_{1}+m_{2}v_{2}

Where,m_{1} = mass of hunter

m_{2} = mass of bullet

u = initial velocity

v = recoil velocity

Put the value in the equation

0+0=70\times v_{1}+0.042\times590

v_{1}=-\dfrac{0.042\times590}{70}

v=-0.354\ m/s

Hence, The recoil velocity is 0.354 m/s.

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3 years ago
4. What is the acceleration of a plane that changes velocity from 75 m/s to
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Answer:

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Explanation:

Apply SUVAT

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3 years ago
What is a law in physics? state the criteria for a statement to be a law.​
steposvetlana [31]

Answer:

By nature, laws of Physics are stated facts which have been deduced and derived based on empirical observations. Simply put, the world around us works in a certain way, and physical laws are a way of classifying that “working.”

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when do you use cos and sin in situations like these? is horizontal always cos and vertical always sin?
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Answer:

yes

Explanation:

this is simple

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while opp=hyp(sin x)

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Answer:

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Explanation:

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