6. Rank the following in terms of increasing kinetic energy:
2 answers:
I'm doing dis greatest to least
1.C
2.A
3.D
4.B
Answer:
B < D < A < C
Explanation:
Kinetic energy depends on the mass and the square of the velocity of the body. A body in motion has kinetic energy.
A. m = 12000 kg
v = 15 m/s
K.E. = 0.5 mv²
= 0.5 (12000 kg) (15 m/s)²
= 1,350,000 J
B. m = 10,000 kg
v = 0
K.E. = 0 J
C. m = 15 kg
v = 1000 m/s
K.E.=0.5 mv²
= 0.5 (15 kg) (1000 m/s)²
= 7,500,000 J
D. m = 100 kg
v = 5 m/s
K.E.=0.5 mv²
= 0.5 (100 kg) (5 m/s)²
= 250 J
In increasing order of kinetic energy:
B < D < A < C
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