The distance-time graph of a body is as shown in the figure. The part of the graph that represents the
uniform speed of the body is
(a) OA
(b)AB
(c)BC
(d)N
Both OA andBC

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The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water

Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine

Use the drop-down menus to answer each question. which line represents the movement of a cart with a constant acceleration? a which line represents the movement of a cart with a constant velocity? c which lines represents a cart with no velocity or acceleration? b