A girl pulls on a $10\mathrm{kg}$ wagon with a constant force of $20N$. What is the wagon's acceleration?

A large boulder falls from rest off a cliff. Assuming negligible air resistance and that the acceleration due to gravity is $g=9.8m/s^2$, how fast is the boulder moving after $2$ seconds?

A truck increases its velocity from $10m/s$ to $30m/s$ in $5s$. What is the acceleration of the truck?

In the context of motion in one dimension, is it possible for an object to have a constant $v$ while its $a$ is not $0$?

An object always accelerates in the same direction as which of the following?

An object starts from rest and accelerates uniformly at $2 m/s^2$. What is its velocity ten seconds after starting from rest?

In the context of one-dimensional motion, at what point during its motion is an object's $a$ (acceleration) equal to $0$?

Which of the following examples accurately describes an object that is accelerating?