Question

An object’s position in meters and motion in meters per second can be described by x=10+5t during the time interval 0≤t≤3 seconds. Which of the following statements is the best description of the object’s motion?

a. initial position of the object is 5 meters
b. average velocity of the object is 10 m/s
c. acceleration of the object is 0
d. object's speed is increasing

Answer 1

c. acceleration of the object is 0

Step-by-step explanation:

The position of the object is:

x (m) = 10 (m) + 5 (m/s) t (s)

At time t=0, x = 10 m, so A is false.

The speed is constant at 5 m/s, so B and D are false.

The speed is constant, so the acceleration is 0. C is true.