Why cant soy sauce freeze
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Their velocity afterward is v=3.467 m/s
Explanation:
Given:
Mass of the first football player= 91.5 kg
Initial velocity of the football player 3.73 m/s
Mass of second football player=63.56 kg
Initial velocity of the second football player=3.09 m/s
To find:
Final velocity of both players=?
Solution:
According to the law of conservation of momentum,
Initial momentum =final momentum
mathematically represented as
...........................(1)
where
=intial velocity of the football player
= inital velocity of second football player
=finall velocity of the first football player
=final velocity of second football player
after tackling , both the football players moves with the same velocity,
so
Hence equation (1) becomes
now substituting the values,
v=3.467 m/s
Answer:
Explanation:
As we know that initial height of both the balls are same
also the mass of the two balls is given as
so here we can say by mechanical energy conservation
initial total mechanical energy = final total mechanical energy
since both balls are initially at rest so initial total kinetic energy of the balls will be zero
now final total kinetic energy = initial total potential energy
now we say
so we have