The figure shows the velocity v or position s of a body moving along a coordinate line as a function of time t . Use the
figure to answer the question.
-
What is the body's speed when $t = 2 \mathrm { sec }$ ?
A) $0 \mathrm { ft } / \mathrm { sec }$
B) $2 \mathrm { ft } / \mathrm { sec }$
C) $- 2 \mathrm { ft } / \mathrm { sec }$
D) $3 \mathrm { ft } / \mathrm { sec }$

Question

The figure shows the velocity v or position s of a body moving along a coordinate line as a function of time t . Use the
figure to answer the question.
-
What is the body's speed when $t = 2 \mathrm { sec }$ ?
A) $0 \mathrm { ft } / \mathrm { sec }$ 
B) $2 \mathrm { ft } / \mathrm { sec }$ 
C) $- 2 \mathrm { ft } / \mathrm { sec }$ 
D) $3 \mathrm { ft } / \mathrm { sec }$

Quizplus · Accepted Answer

At $t = 2 \mathrm { sec }$, the body's velocity is 2 ft/sec, which means the body is moving at a constant speed of 2 ft/sec. Therefore, the body's speed at $t = 2 \mathrm { sec }$ is also 2 ft/sec.

The Figure Shows the Velocity V or Position S of a Body