Answer:
The correct answer is d
Step-by-step explanation:
Answer:
The man will take 64 seconds to reach to the south shore of the frozen pond.
Step-by-step explanation:
Given:
Weight of the man = 748 N Mass of the man,
=
=
kg
Radius of the pond
= 4 m
Mass of the textbook = 1.2 kg
Velocity at which the textbook is thrown = 4 ms^1
We have to find the velocity of the man after the throw.
Let the velocity is
.
Now using law of conservation of momentum we can find the
value.
Considering 
And initial velocity of both the man and book i.e 
So,
⇒ 
⇒ Plugging the values.
⇒ 
⇒ 
⇒
ms^-1
Here the negative velocity is meant for opposite direction of the throw.
Numerically we will write,
With this velocity the man will move towards south.
We have to calculate the time taken by the man to move to its south shore.
And we know 
Let the time taken be
and
and
then, 
Then
⇒
⇒ Plugging the values.
⇒ 
⇒
sec
The man will take 64 seconds to reach to the south shore of the frozen pond (circular).
The ordered pair (6 , 4) is a solution for y - 4 = 7(x - 6)
Step-by-step explanation:
The point-slope form of a linear equation is:
, where
- m is the slope of the line
is a point on the line
Any point on the line is a solution for the equation of the line
The solution of an equation is the values of x and y which make the left hand side is equal to the right hand side
∵ The equation is y - 4 = 7(x - 6)
- Compare the equation by the point-slope form above
∴ m = 7
∴
= 6 and
= 4
- That means point (6 , 6) lies on the line
∴ Point (6 , 4) is a point on the line which represents the
given equation
∵ Any point on a line is a solution of the equation of that line
∴ (6 , 4) is a solution of the equation
The ordered pair (6 , 4) is a solution for y - 4 = 7(x - 6)
Learn more:
You can learn more about the linear equations in brainly.com/question/1284310
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A) 7480$ will be in the account at the end of one year.
B) $6460 will be in the account at the end of 2 years.