From the list below, underline every quantity that is an SI base quantity. charge, electric current, force, time
For some situations, the straight-line distance $s$ travelled by an object in time $t$ is given by $s = \frac{1}{2} a t^2$ where $a$ is the acceleration of the object. State two conditions that must be satisfied for the above equation to apply to the object's motion.
Fig. 1.1 shows how the velocity $v$ of a car moving in a straight line changes with time $t$.
Compare the car's acceleration qualitatively at time $t = 8.0\,\text{s}$ and at time $t = 14.0\,\text{s}$ in terms of: magnitude direction.
Find the magnitude of the car's acceleration at time $t = 4.0\,\text{s}$.
The car is at point X at time $t = 0$. Find the magnitude of the displacement of the car from X at time $t = 12.0\,\text{s}$.