A car, just pulling onto a straight stretch of highway, has a constant acceleration trom 0 m/s to 25 m/s west in 12 . aDraw a v-t graph of the car's motion, b. Use the graph to determine the car's displacement during the 12.0-time interval Another car is traveling along the same stretch of highway. It traveis the same distance in the same time as the first carbut its velocity is constant. Draw a v-t graph for this car's motion. dExplain how you knew this car's velocity.

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.

Atemperature inversion can cause a warm air mass to move over a colder air mass. this traps the colder air mass and prevents surface air from rising. this may result in which of these? a) smog b) acid rain c) freezing rain d) a thunderstorm

A15,000 kg rocket traveling at +230 m/s turns on its engines. over a 6.0 s period it burns 1,000 kg of fuel. an observer on the ground measures the velocity of the expelled gases to be −1,200 m/s.