A small dog is trained to jump straight up a distance of 1.2 m. How much kinetic energy does the 7.2-kg dog need to jump this high? (The acceleration due to gravity is 9.8 m/s².)

85 J

18.2 J

9.8 m/s

There is not enough information.

Is saliva breaking a down a piece of bread chemical or physical

A cylinder of diameter 100 mm rolls from restdown a 5 m long ramp and its center of mass is moving with velocity 2 m/s at the bottom of the ramp. (a) What is its (constant) acceleration down the ramp? (b) What is its angular acceleration?

Rays of light moving upward through water toward the water-air boundary at angles larger than 488 to the nor - mal are totally reflected. No rays larger than 488 refract outside.

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Which of the following atoms do not usually form bonds

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What is the net force acting on a 10 kg freely falling object?

A comet is a A. meteoroid that travels through Earth's atmosphere and hits the surface. B. meteoroid that burns up in Earth's atmosphere, producing a streak of light. C.

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