The mass of a object A is double the mass of object B.The object B moves with a speed doubled to that of a A. Calculate the ratio of there kinetic energy of A to the kinetic energy of B. With steps.
Answers
Answered by
20
Answer:
Given:
Mass of A = 2 ( Mass of B)
Velocity of B = 2 ( Velocity of B)
To find:
Ratio of Kinetic energy
Formulas used:
KE = 1/2 mv²
Calculation:
Let mass of B = m,
mass of A = 2m
velocity of B = v
velocity of A = v/2
KE of A = 1/2 (2m)(v/2)²
=> KE of A = mv²/4
Similarly,
KE of B = 1/2 (m) (v)²
=> KE of B = mv²/2
Ratio of A : B = 1: 2
Answered by
12
Answer:
Suppose mass of B = m.
and mass of A = 2m.
Velocity of B = v.
Velocity of A = v/2.
KE of A = 1/2 (2m)(v/2)^2.
KE of A = mv^2 /4.
KE of B = 1/2(m)(v^2).
KE of B =mv^2/2.
Ratio of A:B = 1:2.
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