For motion with constant acceleration, what happens to the final velocity when the acceleration is zero?
AIt doubles the initial velocity over the same time
BIt falls to zero, whatever the initial velocity was
CIt equals the initial velocity, so velocity is constant
DIt grows with the square of the elapsed time
Answer & Solution
Correct answer: C. It equals the initial velocity, so velocity is constant
1. The final velocity equals the initial velocity plus the acceleration times the time.
2. Putting the acceleration to zero removes the second term entirely.
3. The final velocity therefore equals the initial velocity, so the velocity is constant.
4. Zero acceleration does not stop an object, it simply stops the velocity from changing.
_Source: OpenStax College Physics (CC BY 4.0), Ch 2 "Kinematics", section 2.5 Motion Equations for Constant Acceleration in One Dimension_
Related questions
Measuring time at all depends on the fact that:An airplane passenger moving 4 metres toward the rear of the plane has a displacement recoA cyclist rides 3 km west then turns and rides 2 km east. The magnitude of the displacemenA scalar such as temperature can be negative, and there the minus sign indicates:An object with negative acceleration whose acceleration points the same way as its motion Deceleration is best defined as acceleration that is:An acceleration of 8.33 metres per second squared due west means the velocity changes by:The SI unit of acceleration is metres per second per second because acceleration is: