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(II) A kangaroo jumps to a vertical height of 1.65 $\mathrm{m} .$ Howlong was it in the air before returning to Earth?

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1.16 s

Physics 101 Mechanics

Chapter 2

Describing Motion: Kinematics in One Dimension

Physics Basics

Motion Along a Straight Line

Motion in 2d or 3d

Newton's Laws of Motion

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03:28

Newton's Laws of Motion are three physical laws that, laid the foundation for classical mechanics. They describe the relationship between a body and the forces acting upon it, and its motion in response to those forces. These three laws have been expressed in several ways, over nearly three centuries, and can be summarised as follows: In his 1687 "Philosophiæ Naturalis Principia Mathematica" ("Mathematical Principles of Natural Philosophy"), Isaac Newton set out three laws of motion. The first law defines the force F, the second law defines the mass m, and the third law defines the acceleration a. The first law states that if the net force acting upon a body is zero, its velocity will not change; the second law states that the acceleration of a body is proportional to the net force acting upon it, and the third law states that for every action there is an equal and opposite reaction.

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In mathematics, a proof is a sequence of statements given to explain how a conclusion is derived from premises known or assumed to be true. The proof attempts to demonstrate that the conclusion is a logical consequence of the premises, and is one of the most important goals of mathematics.

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(II) A kangaroo jumps to a…

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(II) A kangaroo jumps stra…

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01:47

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A kangaroo can jump over a…

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Kangaroos have made leaps …

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Assume air resistance is n…

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(a) If a flea can jump str…

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An astronaut on the Moon d…

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On the moon the accelerati…

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So here we know that we're gonna choose the downward part. So downwards is positive and we can say that Ah, why Initials comport zero. And we can say that the wife final would then be equal to 1.65 meters. And we know that the time it takes time begins a time taken to reach why Max equals time taken from why Max to the ground. So we can say tee total would be equal to two times t. And so when solving for tea, we can say I don't know why equals V why initial t plus 1/2 uh G t squared and this is going to be equal to zero. Therefore, we can say that T is gonna equal the square root of two times Delta y divided by G. And we can say that time total would be equal to two times the square root of two delta y divided by G and we can solve. So time total would be equal to two times the square root of two times one 0.65 meters divided by 9.8 meters per second squared. And this is giving us 1.16 seconds. So that's how long the kangaroo was in the air. That's the That's the end of the solution. Thank you for watching.

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