The position of a car as a function of time is given by x= (50m) + (-5.0 m/s)t + (-10 m/s2)t2(a) What are the initial position, initial velocity, and acceleration of the car? (b) plot x versus t for t=0 to t=2 s (c) What distance does the car travel during the first 1.0 s? (d) What is the average velocity of the car between t=1.0 s and t=2.0 s?

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

Debris produced by mining is called

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.