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3 years ago

DIylpst any three properties of 9.

1 answer:

7 0

Answer:Commutative property of multiplication: Changing the order of factors does not change the product. For example, 4 \times 3 = 3 \times 44×3=3×44, times, 3, equals, 3, times, 4.

Associative property of multiplication: Changing the grouping of factors does not change the product. For example, (2 \times 3) \times 4 = 2 \times (3 \times 4)(2×3)×4=2×(3×4)left parenthesis, 2, times, 3, right parenthesis, times, 4, equals, 2, times, left parenthesis, 3, times, 4, right parenthesis.

Identity property o

Explanation:

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8. A 60 kg runner has 1500 J of kinetic energy. How fast is he moving?

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Answer: 7.07 m/s

Explanation:

Mass of runner = 60 kg runner

Kinetic energy = 1500J

Speed of runner = ?

Recall that kinetic energy is the energy possessed by a moving object, and it depends on its mass and speed by which it moves.

Hence, K.E = 1/2 x mass x (speed)^2

1500J = 1/2 x 60kg x (speed)^2

1500J = 30kg x (speed)^2

(speed)^2 = 1500J/30kg

(speed)^2 = 50

To get the value of speed, find the square root of 50

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speed = 7.07 m/s

Thus, the runner moves as fast as 7.07 m/s

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3 years ago

DIylpst any three properties of 9.​

DIylpst any three properties of 9.