When were Earth’s landmasses first recognizable as the continents we know today
2 answers:
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Answer:
The velocity of other mass is 3.60 m/s.
Explanation:
Given that,
Mass of first block = 8 kg
mass of second block = 4.3 kg
Speed = 6.7 m/s
We need to calculate the speed of first mass
Using conservation of momentum
where, m₁ =mass of first block
m₂ =mass of second block
m₁ =mass of first block
v₂ =speed of second block
Put the value into the formula
Negative sign represent the opposite direction of initial value.
Hence, The velocity of other mass is 3.60 m/s.
Answer:
kinetic energy of glider = -0.376 j
Explanation:
Original distance by which the spring is compressed can be determine by using law of conservation of energy (As spring slide from glider, it gain some potential energy. On the top of track there is glider’s potential energy exist)
where x is compressed distance by spring
height of track is calculated as
where l is distance covered by glider, theta angle is the angle of inclination of track
therefore, we have formula for x as
x = 0.039 m
kinetic energy of glider = potential energy by spring - potential energy at 1.50 distance
kinetic energy of glider = -0.376 j