Consider the car driving around a circular track. Once started, the driver maintains a speed of 45 m/h. Compare the
driver's velocity with his acceleration in this case.
The car is accelerating because it is changing direction but the velocity is
constant. the
A)
Eliminate
The car is traveling at a constant rate of speed so it is not accelerating and
the velocity does not change.
Acceleration is the change in velocity so the car is experiencing a change
in velocity and it is accelerating.
The car is traveling at a constant rate of speed so it is not accelerating but
the velocity changes because the direction the car travels is constantly
changing.
I

Jason and mia are both running in a race. as they approach the finish line, you being the physicist that you are decide to time how long it takes them to reach the end of the race. when you start your stop watch (you can take this as time t = 0 s) you notice that mia is an unknown distance d ahead of jason and both are moving with the same initial velocity v_0. you also notice that jason is accelerating at a constant rate of a_j, while mia is deaccelerating at a constant rate of -a_m. jason and mia meet each other for the first time at time t = t_1. at this time (t = t_1) jason's velocity is two times that of mia's velocity, meaning v_j (t_1) = 2v_m (t_1). a) draw the position vs. time graph describing mia's and jason's motion from time t = 0 to time t = t_1. clearly label your axes and initial conditions on your graph. b) draw the velocity vs. time graph describing mia and jason's motion from time t = 0s to time t = t_1. clearly label your axes and initial conditions on your graph. c) how long from when the stop watch was started at t = 0s did it take mia and jason to meet? express your answer in terms of know quantities v_0, a_m, and a_j. d) when the stop watch started at time t = 0s, how far apart, d, were mia and jason? express your answer in terms of know quantities v_0, a_m, and a_j.

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

Does anyone have the answers to online physics course plato course physics, semester a v3.0