Answer:
Zero
Explanation:
The motion of the ball is the motion of a projectile, and it consists of two independent motions:
- A horizontal motion with constant velocity
- A vertical motion with constant acceleration g =9.8 m/s^2 towards the ground
We are only interested in the vertical component of the velocity, which is given by
where
v0 = 32 m/s is the initial speed
is the initial direction
t is the time
The vertical component of the velocity decreases until the ball reaches its maximum height. At that moment, the vertical velocity becomes zero, and then it changes direction (pointing downward).
Answer:
E = 301.5 J
Explanation:
We have,
Mass of mother, m = 67 kg
Here, a sneaky teenager crawls under the trampoline and uses the ring to pull the trampoline slowly down. As she passes through the position at which she was before her son stretched the trampoline, her speed is 3 m/s.
It is required to find the elastic potential energy the son add to the trampoline by pulling it down. It is based on the conservation of energy.
The elastic potential energy of the mother = the elastic potential energy the son add to the trampoline.
So, the elastic potential energy is :
So, the elastic potential energy of 301.5 J the son add to the trampoline by pulling it down.
Answer:
6.28 m/s.
Explanation:
Given that,
The mass of the object, m = 0.2 kg
The radius of the circle, r = 0.5 m
It takes the object 0.500 s to complete one revolution.
We need to find the translational speed of the object. Let it is v. We know that,
So, the transalational speed of the object is 6.28 m/s.
Youre basically allowing the gas to have room to roam free in a large container. When you "squeeze" it into a smaller space, there is less room to move and thus the atoms bounce off of each other more often.
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