a car is travelling at 72kmph, and if that car slows down to 60kmph it takes an extra 1 hour to cover that same distance. at 72kmph, how long did it take for the car to cover that distance?

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When a radar gun says the pitch is 90 miles per hour at what point in the balls travel to home plate is the radar gun measuring the velocity?

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How can you estimate the height of a bridge by dropping a stone from it ?

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write a program on link list to get information about graduated students?

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Explain the Hard water?

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In radio transmission, what does the acronym am stand for?

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What is a neutron?

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Who did first record the sound?

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Does water drain counterclockwise in the northern hemisphere and clockwise in the southern hemisphere?

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is photocell can be used as photodiode

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When a porcelain dish or a glass material are falling on the floor, it breaks but on falling on sofa or sponge it will not break. Why?

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When gravity is the only force acting on an object the object is in what?

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