A Car Starting from Rest Accelerates at a Constant 2

question 91

Multiple Choice

A car starting from rest accelerates at a constant 2.0 m/s² for 10 s.It then travels with constant speed it has achieved for another 10 s.Then it finally slows to a stop with constant acceleration of magnitude 2.0 m/s².How far does it travel after starting?

• A)200 m
• B)300 m
• C)400 m
• D)500 m

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Definitions:

Atmospheric Pressure

The pressure exerted by the weight of the atmosphere at any given point, usually measured in millibars (mb) or inches of mercury (Hg).

Sea Level

The average height of the ocean's surface between high and low tide, used as a reference point for measuring elevations and atmospheric pressure.

Fluid

A substance that has fluidity; that is, it lacks definite shape and both flows readily and yields to the slightest pressure. Most liquids and gases are fluids.

Gases

Substances that exist in a state that fills any container uniformly, without a definite shape or volume, such as oxygen or nitrogen.