Answer:
Explanation:
For elestic collision
v₁ = 
![v_2 = [tex]\frac{(m_2-m_1)u_2}{m_1+m_2} +\frac{2m_1u_1}{m_1+m_2}](https://tex.z-dn.net/?f=v_2%20%3D%20%5Btex%5D%5Cfrac%7B%28m_2-m_1%29u_2%7D%7Bm_1%2Bm_2%7D%20%2B%5Cfrac%7B2m_1u_1%7D%7Bm_1%2Bm_2%7D)
[/tex]
Here u₁ = 0 , u₂ = 22 m/s , m₁ = 77 kg , m₂ = .15 kg , v₁ and v₂ are velocity of goalie and puck after the collision.
v₁ = 0 + ( 2 x .15 x22 )/ 77.15
= .085 m / s
Velocity of goalie will be .085 m/s in the direction of original velocity of ball before collision.
v₂ = (.15 - 77)x 22 / 77.15 +0
= - 21.91 m /s
=Velocity of puck will be - 21.91 m /s in the direction opposite to original velocity of ball before collision.
If the ball didn't make it to the end of the journey, then it presumably ran out of kinetic energy, said energy, energy of movement, either being converted to potential energy, or to heat energy as the case may be.
Conservation of energy means that the total, often the kinetic plus the potential, is constant. One decreases and the other increases, and vice versa, so that they all add up to the same amount.
ball released from rest at top of a track will have zero initial velocity. ball at the top of the track will have a potential energy of mgh. ball's vertical height above bottom of track gives the potential energy.
Answer:
Solids can hold their shape because their molecules are tightly packed together. ... Atoms and molecules in liquids and gases are bouncing and floating around, free to move where they want. The molecules in a solid are stuck in a specific structure or arrangement of atoms
Hope this helps ☆*:. o(≧▽≦)o .:*☆
Answer:
The force exerted by the chain is 117N
Explanation:
We have to draw a free body diagram to visualize this problem better.
according to Newton's second law:
but the roller coaster is having a constant speed so:
So:
I would say D. because you round to the nearest whole number and 0.04 is way less than 0.5 which is a good rounding up number.
