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belka [17]
2 years ago
11

Rest and motion are relatives terms justify the statement​

Physics
1 answer:
Anna007 [38]2 years ago
3 0

Answer:

rest and motion are the relative terms because they depend on the observer's frame of reference. So if two different observers are not at rest with respect to each other, then they too get different results when they observe the motion or rest of a body

Explanation:

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If the mass of a material is 115 grams and the volume of the material is 16 cm3, what would the density of the material be?
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3 years ago
if a 5-kg bowling ball is projected upward witha velocity of 2.0 m/s, then what is the recoil velocity of the Earth(mass=6.0×10^
vitfil [10]

by the concept of momentum conservation we can say

if net force on a system of mass is ZERO then its momentum will remain conserved

Here a ball is projected upwards so if we take Ball + Earth as a system then total momentum of the system will remain conserved

Initially when ball is on the surface of earth the system has zero momentum and hence we can say after throwing the ball momentum of earth + ball must be zero

now using same equation we can say

P_{ball} + P_{earth} = 0

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from above equation velocity of earth will be

v_2 = \frac{m_1 v_1}{m_2}

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v_2 = 1.67 * 10^{-24} m/s

so above will be the recoil speed of earth

3 0
2 years ago
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