2. 1D Motion / Kinematics

If a painter is at rest on a scaffold, what can be said about the net force acting on the painter?

In the context of motion, which physical quantity is defined as the change in velocity divided by the change in time? $a=\frac{\Delta v}{\Delta t}$

A car starts from rest and accelerates at a constant rate of $a$ for a time $t$. What is the car's final velocity?

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

An object moves along the x-axis with its acceleration as a function of time shown in Figure 1. At time $t=0$ s, its velocity is $v_x=2.0m/s$. If the acceleration is constant and equal to $3.0m/s^2$ for $0\le t\le 4$ s, what is the velocity at $t=4$ s?

If an object is not accelerating, which of the following statements is true?

A car slows down from $65\mathrm{km}/s$ to $30\mathrm{km}/s$ in $5s$. What is its acceleration?

If the speed of your car is doubled, how does its $KE$ (kinetic energy) change?

A car moves $4$ times as fast as another identical car. Compared to the slower car, the faster car has:

In a motion graph, a car moves such that at segment c, its velocity changes from $0$ to $30$ m/s in $1$ second. What is the acceleration of the car at segment c?

A particle moves along a straight line with its position given by $x=4+2t+3t^2$, where $x$ is in meters and $t$ is in seconds. What is the initial velocity of the particle?