What is the acceleration of an object if it goes from a velocity of +25 m/s to rest in 5.0 s?
A. –5 m/s2
B. +5 m/s2
C. –25 m/s2
D. +25 m/s2
(final velocity - initial velocity)
--------------------------------------
(final time - initial time)
= ( 0 - 25 ) m/s / ( 5.0 - 0 ) s
= -25/5
= -5 m/s^2
thanks!!!!!!!
Aaaaaaaaaaaaaaaa
What is the acceleration of an object if it goes from a velocity of +25 m/s to rest in 5.0 s?
A.
–5 m/s2
B.
+5 m/s2
C.
–25 m/s2
D.
+25 m/s2
To find the acceleration of an object, we can use the formula:
Acceleration (a) = (final velocity - initial velocity) / time
Here, the initial velocity is +25 m/s, the final velocity is 0 m/s (rest), and the time taken is 5.0 s.
Plugging these values into the formula, we get:
Acceleration (a) = (0 m/s - 25 m/s) / 5.0 s
Simplifying,
Acceleration (a) = -25 m/s / 5.0 s
Acceleration (a) = -5 m/s^2
Therefore, the acceleration of the object is -5 m/s^2.
Therefore, the correct answer is A. -5 m/s^2.