A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.00 m/s at an angle of 20.0° below the horizontal. It strikes the ground 3.00 s later.

(a) How far horizontally from the base of the building does the ball strike the ground?

(b) Find the height from which the ball was thrown.

(c) How long does it take the ball to reach a point 10.0 m below the level of launching? ​


Good Day.


A toy robot when turned on lights project a sound and started to walk .what are the energy transformations that has undergone by the toy .trace energy and its transformation​.

A toy robot may have a batter as the source of energy. Battery has a stored energy in it to be specific, potential chemical energy which can be converted to some other forms of energy.

Chemical Energy ⇒ electrical energy ⇒ light energy ⇒ thermal energy

                                 electrical energy ⇒ sound energy (project a sound)

                                 electrical energy ⇒ mechanical energy (walk)

Hope it helps...=)

It was the Kepler's second law of planetary motion, or The Law of Equal Areas in Equal Time. It was the line between a planet and sun sweeps out equal areas in the plane of planet's orbit over equal times. It was also describing the speed of the planet traveling in a elliptical orbit around the sun.


A 10kg.bowling ball would require what force to accelerate down an alleywsy at a rate of 3m/s2



F= 30N (answer )

Hope this helps!

bye !

D. All of these


Thermal expansion is the tendency of matter to change its shape, area, and volume in response to a change in temperature. (Wiki)

So by that definition you can expand solids, liquids, and gas by changing its temp

Do you know the answer?

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