PHYSICS COLLEGE

You are driving home from school steadily at 95 km/h for 180 km. It then begins to rain and you slow to 65 km/h. You arrive home after driving for 4.5 h. a. how far is your hometown from school?b. what was your average speed?

Answers

Answer 1
Answer:

To solve this problem we will apply the linear motion kinematic equations, for this purpose we will define the time of each of the sections in which the speed is different. After determining the segments of these speeds we can calculate the average distance and the average speed. Our values are given as

x = 180 km

v = 95 km / h

Speed can be described as the displacement of a body per unit of time, and from that definition clearing the time we would have

From the statement we have that the total time is 4.5, then he remaining time is

When it starts to rain there is a phase change in the speed which is given by

Then the distance travel in this velocity

(a).  Distance of your hometown from school ,

(b) The  average speed


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D. helium-4

Answers

Answer:

the answer is helium you already know that because im in college on my way to the military next week bless me

Explanation:

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What happens to parallel light rays that strike a concave lens?

Answers

Answer: When parallel light rays strike a concave lens, they will diverge that is  they spread out.

Concave lens is also known as diverging lens, which means that when parallel rays of light strike on it, the lens spreads out the light rays ( that is it diverges the rays of light) that are refracted through it.

It is thinner at center as compared to edges and used to correct myopia ( a defect of vision that is also termed short-sightedness).

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Every force has one and only one 3rd law pair force. every force has one and only one 3rd law pair force. a. True
b. False

Answers

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Find the mass of a person walking west at a speed of 0.8 m/s with a momentum of 52.0 kg.m/s west.

Answers

Answer:

mass of the person walking to west is 65 kg.

Given:

Momentum = 52

Speed = 0.8

To find:

Mass of the person = ?

Formula used:

Momentum is given by,

P = m × v

Where, P = momentum

m = mass

v = speed

Solution:

Momentum is given by,

P = m × v

Where, P = momentum

m = mass

v = speed

Mass =

m =

m = 65 kg

Thus, mass of the person walking to west is 65 kg.

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