Apentix/AP Calculus AB/Unit 4: Contextual Applications of Differentiation/Question

AP Calculus ABeasymcq1 pt

A particle's velocity at time $t$ seconds is $v(t)=2t-10$ m/s. What is the particle's speed at $t=4$ seconds?

A.

-2

m/s

B.

8

m/s

C.

2

m/s

D.

10

m/s

Explanation

Core Concept

Velocity at $t=4$ is $2(4)-10=-2$ m/s. Speed is the absolute value of velocity, so speed $=|-2|=2$ m/s.

Correct Answer

C $2$ m/s

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