2. 1D Motion / Kinematics

In which of the following situations will a ball experience the greatest $a$?

Now consider the children's linear accelerations. Which of the following statements is correct?

Which of the following best describes how motion maps illustrate accelerated motion?

If your car is accelerating to the right from a stop, which of the following statements is true about the direction of its acceleration vector?

Which of the following best describes $a$cceleration in physics?

Which of the following factors directly affect an individual's total stopping time when bringing a moving vehicle to rest?

If $v$ is constant, what is the $a$ of the object?

A cart moves along a straight track with a low fan speed, resulting in a constant acceleration. If the cart's velocity increases from $10 \text{cm}/\text{s}$ to $30 \text{cm}/\text{s}$ in $4 \text{s}$, what is the acceleration of the cart in $\text{cm}/\text{s}{2}^{}$?

A good model for the acceleration of a car trying to reach top speed in the least amount of time is a_𝓍 = a_₀ ─ kv_𝓍, where a_₀ is the initial acceleration and k is a constant. Find an expression for the car's velocity as a function of time.

Which of the following best describes positive $a$?

Which two controls on a car are primarily responsible for causing a change in $v$?

A cheetah accelerates from $15\text{m/s}$ to $30\text{m/s}$ in $3.0\text{s}$. What is the cheetah's acceleration?

An object moves along a straight line and its velocity vs. time graph consists of three segments: Segment A (velocity increases from $0$ to $5 m/s$ from $t=0$ to $t=2 s$), Segment B (velocity remains constant at $5 m/s$ from $t=2 s$ to $t=4 s$), and Segment C (velocity decreases from $5 m/s$ to $0$ from $t=4 s$ to $t=6 s$). During which segment(s) is the object speeding up?

A rocket starts from rest and moves upward from the surface of the earth. For the first $10.0$ s of its motion, the vertical acceleration of the rocket is given by $a_y=(2.80$ m/s³$)t$, where the $+y$-direction is upward. What is the height of the rocket above the surface of the earth at $t=10.0$ s?