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Paraphin [41]
4 years ago
15

A person takes a trip, driving with a constant speed of 89.5km/h, except for a 22.0−min rest stop. If the person's average speed

is 77.8km/h
, how much time is spent on the trip and how far does the person travel?
Average Speed:

Let a body covered d1,d2,d3
distances in respective time intervals t1,t2 and t3.

.

Then the average speed of the body is given by

Average Speed=Total DistanceTotal Time=d1+d2+d3t1+t2+t3.
Physics
1 answer:
Elanso [62]4 years ago
8 0

Answer:

stop using brainly and learn this bs in class

Explanation:

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Show solution for # 4
velikii [3]
M1 = 750Kg, v1 = 10m/s
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The momentum before colision is equal with the momentum after colision:

m1v1 + m2v2 = (m1+m2)v3 => v3 is the velocity after colison and that s u want to caluclate for your problem

=> m1v1 = (m1+m2)v3 => v3 = m1v1/(m1+m2) now u should do the math i think v3 prox 2,4 but not sure u should caculate
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3 years ago
Two rocks are at the top of a building. Rock 1 is dropped from rest while Rock 2 is thrown horizontaly at a velocity of 5 ms.
LuckyWell [14K]

Answer:

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Explanation:

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3 years ago
A car goes around a curve of radius r at a constant speed v. Then it goes around a curve ofradius 2r at speed 2v. What is the ce
Rainbow [258]

The centripetal force on the car as it goes around the second curve is twice that compared to the first.

What is Centripetal force?

It is the force that is necessary to keep an object moving in a curved path and that is directed inward toward the center of rotation.

The formula of Centripetal force is:

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Here,

At the first curve,

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According to the formula of centripetal Force:

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Learn more about centripetal force here:

<u>brainly.com/question/14317060</u>

#SPJ4

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Here's an example:

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