If an object is dropped from rest, what will be its velocity after 15 seconds? (g = 9.8 m/s²)
-
A.
143 m/s
-
B.
149 m/s
-
C.
145 m/s
-
D.
147 m/s
Correct Answer:
D. 147 m/s
Explanation:
To determine the final velocity of an object falling from rest, you use the kinematic formula v = u + gt, where "v" is the final velocity, "u" is the initial velocity, "g" is the acceleration due to gravity, and "t" is the time elapsed. Since the object starts from rest, the initial velocity (u) is 0 m/s. By substituting the given values of g = 9.8 m/s² and t = 15 seconds into the equation, the calculation becomes v = 0 + (9.8 * 15). This results in a final velocity of 147 m/s.
Click below to open Discussion & Feedback
0 Issues
Please
login to comment or Report Issues.