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F FCAT-II

PHYSICS Test Part – III

1. The graph above represents position x versus time t for an object being acted on by a constant force. The

average speed during the interval beteen 1 s and ! s is most nearly

"A# ! m$s "%# & m$s "C# ' m$s "(# ) m$s

At time t * +, car traveling ith speed v+ passes car hich is just starting to move. %oth cars then

travel on

to parallel lanes of the same straight road. The graphs of speed v versus time t for both cars are shonabove.

!. /hich of the folloing is true at time t * !+ seconds0

"A# Car is behind car .

"%# Car is passing car .

"C# Car is in front of car .

"(# Car is accelerating faster than car .

. From time t * + to time t * &+ seconds, the areas under both curves are e2ual. Therefore, hich of the

folloing is true at time t * &+ seconds0

"A# Car is behind car .  "%# Car is passing car .

  "C# Car is in front of car .

"(# Car is accelerating faster than car .

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&. 3ectors V1 and V2 shon above have e2ual magnitudes. The vectors represent the velocities of an object attimes t 1, and t 2, respectively. The average acceleration of the object beteen time t 1 and t 2 as

"A# directed north

"%# directed est

"C# directed north of east"(# directed north of est

'. The velocity of a projectile at launch has a hori4ontal component vh and a vertical component vv. Air

resistance is negligible. /hen the projectile is at the highest point of its trajectory, hich of the folloingshos the vertical and hori4ontal components of its velocity and the vertical component of its

acceleration0

3ertical 5ori4ontal 3ertical3elocity 3elocity Acceleration

"A# vv vh +

"%# + vh +

"C# + + g"(# + vh g

). The graph above shos the velocity v as a function of time t for an object moving in a straight line. /hichof the folloing graphs shos the corresponding displacement x as a function of time t for the same time

interval0