Near the end of a marathon race, the first two runners are separated by a distance of 45.0 m. The front runner has a velocity of 3.45m/s, and the second a velocity of 4.20 m/s. (a) What is the velocity of the second runner relative to the first? (b) If the front runner is 250 m from the finish line, who will win the race, assuming they run at constant velocity? (c) What distance ahead will the winner be when she crosses the finish line?

1) What is the displacement of an object dropped from a height after 1.50 seconds? 2) How long will it take a dropped object to reach the ground if dropped from a height of 1.75 meters? 3) An object is flipped upward at a velocity of 30.0 m/s. At what point in its ascent will its velocity be 2.0 m/s? 4) How long will a coin launched upward at a velocity of 25.0 m/s attain a velocity of 15.0 m/s? 5) A 5-kg rock is dropped from a height of 15.0 m. a) What will be its velocity 0.75 seconds after its drop? b) What will be its velocity at a point 8.0 m from the ground? 6) How high will an object launched upward travel if its initial velocity was 15.0 m/s?

A red car and a green car identical except for the color, move toward each other in adjacent lanes and parallel to an x-axis. At time t=0, the red car is at Xr = 0 and the green car is at Xg =220 m. If the red car has a constant velocity of 20km/hr, the cars pass each other at x=44.5 m, and if it has a constant velocity of 40km/hr, they will pass each other at x =76.6 m. a). Determine the time(s) associated with the motion of the red car. EV b). derive the appropriate equations for the green car. APc). What is i. the initial velocity of the green car? AN ii. The acceleration of the green car? ANd). At what point will they meet if the velocity of the green car is twice that of the red car? CR

KACTICE ANOTHER Near the end of a marathon race, the first two runners are separated by a distance of 45.0 m. The front runner has a velocity of 3.50 m/s, and the second a velocity of 4.20 m/s. (a) What is the velocity of the second runner relative to the first? m/s faster than the front runner. (b) If the front runner is 250 m from the finish line, who will win the race, assuming they run at constant velocity? O The first runner will win. O The second runner will win. (c) What distance ahead will the winner be when she crosses the finish line? m Additional Materials Reading ASK YOUR TEACHER PRACTICE ANOTHE MY NOTES

A person walks 20.0 meters in a straight line. Then the person turns around and walks back 18.0 meters along the same line. The time for the walk is 9.00 seconds.(a) What is the average speed for this walk?(b) What is the average velocity for this walk?(c) What is the displacement?(d) What is the total distance?

]=An inquisitive physics student and mountain climber climbs a 55.0-m-high cliff that overhangs a calm pool of water. He throws two stones vertically downward, 1.00 s apart, and observes that they cause a single splash. The first stone has an initial speed of 2.20 m/s. (a) How long after release of the first stone do the two stones hit the water? s (b) What initial velocity must the second stone have if the two stones are to hit the water simultaneously? magnitude  m/s direction     (c) What is the speed of each stone at the instant the two stones hit the water? first stone  m/s second stone m/s