An object with an inital velocity of 20 cm/sec is decelerated at 2 cm/sec/sec for 5 seconds,What will the resultant velocity be?
Vf=Vi+a*t
a=-2cm/s^2
Vi=20cm/s
t=5sec
Thank you!
To find the resultant velocity of an object, you need to know its initial velocity, the deceleration, and the time for which the deceleration occurs.
In this case, the object has an initial velocity of 20 cm/sec and is decelerated at a rate of 2 cm/sec/sec for 5 seconds.
To find the resultant velocity, you can use the equation of motion:
v = u + at
Where:
v = final velocity
u = initial velocity
a = acceleration
t = time
In this case, the initial velocity (u) is 20 cm/sec, the acceleration (a) is -2 cm/sec/sec (because deceleration is a negative acceleration), and the time (t) is 5 seconds.
Plugging these values into the equation, we get:
v = 20 + (-2) * 5
Simplifying further:
v = 20 - 10
v = 10 cm/sec
Therefore, the resultant velocity after 5 seconds of deceleration at 2 cm/sec/sec is 10 cm/sec.