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Olin [163]
3 years ago
14

In your everyday life you come across a range of motions in which

Physics
1 answer:
nydimaria [60]3 years ago
7 0
Acceleration is in the direction of motion 
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Helen [10]

Answer:

The answer is B. hope this helps

Explanation:

3 0
3 years ago
How do you explain newton’s second law
lana [24]

Answer:

Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

Explanation:

Hope you get it right!

8 0
2 years ago
Steel has a density of 7.8 g/cm3. what is the mass of a block of steel with a volume of 600.0 cm3?
AlladinOne [14]
The answer to this is 4,680
6 0
3 years ago
A probe orbiting Venus exerts a gravitational force of 2.58 × 10^3 N on Venus. Venus has a mass of 4.87 × 10^24 kg. The mass of
Crazy boy [7]
So this is the info that's given to us:
m1 = 4.87 x 10^24 kg
m2 = 4.87 x 10^24kg
F = 2.58 x 10^3 N

Now we can use this equation to solve: f_g= \frac{Gm_1m_2}{r^2}

You may be asking what g is. Well, it is equal to 6.67x10^-11 m3 /kg s2. G is gravitational constant. So :

2.58 x 10^3 = \frac{6.67x10^{-11} * 4.87 x 10^{24} * 655}{r^{2}} 

As you can see we only have one variable, so we solve for r! 

r = 9.08 x 10^6 km

I hope this helps you out. I remember when I was first learning Newton's law<span> of universal </span><span>gravitation and I had some trouble. But with some practice, I got better. =) </span>

6 0
3 years ago
A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the
makkiz [27]

Answer:

(a) She has traveled a total distance of 28958.04 m during the entire trip.

(b) Her average velocity for the trip is 6.12 m/s

Explanation:

Here is the complete question:

A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 26.8 minutes at an average speed of 7.57 m/s. During the second part, she rides for 42.4 minutes at an average speed of 3.17 m/s. Finally, during the third part, she rides for 9.69 minutes at an average speed of 15.0 m/s. (a) How far has the bicyclist traveled during the entire trip?  (b) What is her average velocity for the trip?

Explanation:

(a) To determine how far the bicyclist has traveled during the entire trip, we will calculate the distance she covered in each part of the trip, and then sum up the distances to determine the total distance covered.

  • First, The distance covered in the first part of the trip

During the first part, she rides for 26.8 minutes at an average speed of 7.57 m/s

That is,

Average speed, v = 7.57 m/s

and time, t = 26.8 minutes

Convert the time to seconds

∴ t = 26.8 minutes = (26.8 × 60) secs = 1608 secs

Average speed = \frac{Distance }{ Time}

Then, Distance = Average speed × Time

Hence, for the first part

Distance = 7.57 × 1608

Distance = 12172.56 m

This is the distance covered in the first part of the trip.

  • For the distance covered in the second part of the trip

During the second part, she rides for 42.4 minutes at an average speed of 3.17 m/s

That is, Average speed, v = 3.17 m/s

and time, t = 42.4 minutes

Convert the time to seconds

∴ t = 42.4 minutes = (42.4 × 60) secs = 2544 secs

From,

Distance = Average speed × Time

Distance = 3.17 × 2544

Distance = 8064.48 m

This is the distance covered in the second part of the trip.

  • For the distance covered in the third part of the trip

During the third part, she rides for 9.69 minutes at an average speed of 15.0 m/s

That is, Average speed, v = 15.0 m/s

and time, t = 9.69 minutes

Convert the time to seconds

∴ t = 9.69 minutes = (9.69 × 60) secs = 581.4 secs

From,

Distance = Average speed × Time

Distance = 15.0 × 581.4

Distance = 8721 m

This is the distance covered in the third part of the trip.

Now for the distance covered during the entire trip,

Total distance = distance covered in the first part of the trip + distance covered in the second part of the trip + distance covered in the third part of the trip

Hence,

Total distance = 12172 m + 8064.48 m + 8721 m

Total distance = 28958.04 m

Hence, she has traveled a total distance of 28958.04 m during the entire trip.

(b) For her average velocity for the trip

Average velocity is given by

Average velocity =  \frac{Total distance traveled}{Total time}

Total distance traveled = 28958.04 m

Total time = 1608 secs + 2544 secs + 581.4 secs

Total time = 4733.4 secs

Hence,

Average velocity =  \frac{28958.04}{4733.4}

Average velocity = 6.1178 m/s

Average velocity ≅ 6.12 m/s

7 0
3 years ago
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