Answer:
The initial velocity is 12.34[m/s]
Explanation:
To understand this problem, let's draw a sketch of what is happening. In the attached image we can fin de sketch.
According to the equations of uniform movement accelerated we have to express them in the two components x and y.
In this problem we will analyze first the movement in the y axis and its equation to obtain the velocity in the initial point (o) and then with the angle of 33° respect to the horizontal we can find the main velocity.
In the previous equation we have the negative term - (2*a*y), the reason for the negative sign is because gravity is the acceleration that is acting downwards.
Therefore:
Now with the velocity in the y component, we can calculate the main vector of the velocity.
The main topic to understand in this problem is that when the height is maximum the velocity will be zero in the y component, therefore Vy=0 and we can simplify the problem.
Answer:
review or print them later.
Based on the information given, it can be noted that the bat was either shorter or longer than what he expected.
From the information given, it was stated that Raghu wants a cricket bat to be made by a carpenter and he tells the carpenter that the length of the bat should be 7 hand spans.
Since he got disappointed when he collected the bat, the reason for this will be because the bat was either shorter or longer than what he requested.
Learn more about length on:
brainly.com/question/25292087
The backpack has been lifted for 0.58 m
Explanation:
The work done in lifting an object is equal to the gain in gravitational potential energy of the object:
where
(mg) is the weight of the object, with
m being the mass
g being the acceleration due to gravity
is the change in height of the object
In this problem,
W = 110 J is the work done
mg = 190 N is the weight of the backpack
Solving for , we find the change in height of the backpack:
Learn more about work:
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The correct answer is: rock 1000 and bottle of soda 2000