Answer:
0.2358
Explanation:
We need here apply the law momentum conservation, for objects who collide.
The equation is given by,
Our values are giving by,
We replace in our equation and solve for V_f, then
Therefore their final velocity is -0.2358m/s (Negative symbol only indicate change in the direction)
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The forces that were exerted during the air resistance was the gravity.
<u>Explanation:</u>
Air resistance is the frictional power air applies against a moving article. As an article moves, air opposition backs it off. The quicker the article's movement, the more prominent the air obstruction applied against it.
The force acting upon the objects dropped in the air was air resistance and gravity. The force acting upon the objects dropped in the vacuum was gravity only.
Answer:
Explanation: simple kinematics
we suppose that initially vo= 0 so if the skier moves 4s :
vf = vo +at = 0 + 3*4 = 12 m/s
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The ball initial velocity is 9.1 m/s
Explanation:
The motion of the ball in this problem is a projectile motion, so it follows a parabolic path, which consists of two independent motions:
- A uniform motion (constant velocity) along the horizontal direction
- An accelerated motion with constant acceleration (acceleration of gravity) in the vertical direction
First of all, we analyze its vertical motion to find the time of flight. We can do it by using the following suvat equation:
(1)
where
:
is the initial vertical velocity (0 because the ball is kicked horizontally)
is the acceleration of gravity
s = -6.0 m is the vertical displacement (the height of the building)
t is the time of flight
Solving for t,
Now we can analyze the horizontal motion; the horizontal velocity is constant and it is given by
where
d = 10.0 m is the horizontal distance covered
t = 1.1 s is the time of flight
Substituting, we find
Learn more about projectile motion:
brainly.com/question/8751410
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