Physics: "Speed, Velocity, and Acceleration - "Speed ...



NameDateSection 6-2 “Speed, Velocity and Acceleration”Instructions:Check your understanding with this practice assessment. Objectives:By the end of this quiz, students will be able to:I.) Identify speed as the distance an object travels in a given amount of time.

II.) Identify that velocity is described by both speed and direction.

III.) Identify acceleration as the change in velocity over time.1) What of the following would typically be used to express speed?A) miles per hourB) degrees per literC) centimeters per mileD) grams per literExplanation:2) Speed describes which of the following quantitates?A) densityB) massC) motionD) temperatureExplanation:3) Describing a car's motion as 40 mph towards the south describes which of the following quantities?A) positionB) speedC) velocityD) accelerationExplanation:4) What quantities are used to express speed? ?A) time and pressureB) distance and timeC) time and temperatureD) distance and directionExplanation:5) Distinguish between speed and velocity.A) Speed describes how fast an object moves while velocity describes the direction the object moves and its speed.B) Speed describes how fast an object moves but velocity describes the change in speed.C) Velocity describes how fast an object moves while speed only describes the direction the object moves.D) Velocity is used to describe the direction an object is moving while speed describes how long the motion lasts.Explanation:6) Which of the following quantities is in the denominator of the units for acceleration?A) timeB) time squaredC) distanceD) directionExplanation:7) Velocity and speed are closely related. Which quantity is part of velocity that is not part of speed?A) directionB) timeC) distanceD) weightExplanation:8) Which of the following quantities can involve a change in direction?A) speed and velocityB) acceleration and speedC) velocity and positionD) velocity and accelerationExplanation:9) What does knowing the acceleration of an object tell you about the motion of that object?A) It tells you how long the object has been moving.B) It tells you how much or how fast the speed is changing.C) It tells you how much or how fast the velocity is changing.D) It tells you how fast the object is moving.Explanation: ................
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