Answer: V-final= {F*{d/v¹}} /{m1 + m2}
Explanation: From Newton's second law we know that impulse that is force multiplied by time is equal to change in momentum.
Therefore the momentum before collision would be
F*t
But time t = distance (d)/velocity(V1)
t = d/V1
Momentum before collision
=F * {d/v1}.
Also, from the question we were told after collision the two balls stuck together. That statement means that they move with a common ( same) velocity after collision.
Therefore,
Momentum after collision
= {m1+m2}*V-final
From the law of conservation of momentum which state that the sum of momentum before collision is EQUAL to the momentum after collision. We have that,
F*{d/v1} = {m1+m2}*V-final
Making V- final subject of the formula we have that,
V-final = {F*{d/v1}} / {m1+m2}
NOTE: The momentum of a body is the product of it's mass and velocity. That is M* V.
Hey there mate ;)
Given PPT image question is attached.
For answers :-
☆ The spectators in the stand are like particles in a <em><u>solid</u></em><em> </em>because <em><u>the</u></em><em><u> </u></em><em><u>spectators</u></em><em><u> </u></em><em><u>are</u></em><em><u> </u></em><em><u>sitting</u></em><em><u> </u></em><em><u>very</u></em><em><u> </u></em><em><u>close</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em><em><u>each</u></em><em><u> </u></em><em><u>other</u></em><em><u> </u></em><em><u>with</u></em><em><u> </u></em><em><u>no</u></em><em><u> </u></em><em><u>spaces</u></em><em><u> </u></em><em><u>in between</u></em><em><u> </u></em><em><u>them</u></em><em><u>,</u></em><em><u> </u></em><em><u>which</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>like</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>property</u></em><em><u> </u></em><em><u>in</u></em><em><u> </u></em><em><u>solids</u></em><em><u>. </u></em>
☆ The players in the pitch are like particles in a <em><u>gas</u></em><em> </em>because <em><u>there</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>large</u></em><em><u> </u></em><em><u>amount</u></em><em><u> </u></em><em><u>if</u></em><em><u> </u></em><em><u>space</u></em><em><u> </u></em><em><u>in</u></em><em><u> </u></em><em><u>between</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>players</u></em><em><u>,</u></em><em><u> </u></em><em><u>which</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>like</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>property</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>gases</u></em><em><u>.</u></em>
☆ The spectators standing in the terraces are like particles in a <em><u>liquid</u></em> because <em><u>there is </u></em><em><u>little</u></em><em><u> space in between the spectators, which is like a property of liquid.</u></em>
Because <span>two organisms with exactly the same </span>niche can't survive in the samehabitat<span> (because they compete for exactly the same resources, so one </span>will<span> drive the other to extinction). However, species whose </span>niches<span> only partly overlap may be able to coexist.</span>
The atomic number Z of an element is the number of protons it contains (and in an atom it is equal to the number of electrons). The mass number M is close to the mass of one mol of the substance but it is defined as the number of protons and neutrons in the nucleus of the atom; there, the main mass of the atom is contained. Hence, N=M-Z=74-36=38(since M counts both protons and neutrons while Z only protons). Thus, it has 38 neutrons.
Answer:
450m
Explanation:
You would use the equation x-x0=0.5(v0+v)t as you have the time and velocities. x-x0(Change in position/displacement)=0.5(0+30)30. The distance will be 450m.