A football player runs from his own goal line to the opposing team's goal line, returning to his ten-yard line, all in 28.5 s. Calculate his average speed and the magnitude of his average velocity. (Enter your answers in yards/s.) (a) Calculate his average speed.    (b) Calculate the magnitude of his average velocity.  yards/s

A ball was kicked at an angle of 60 degrees with respect to the floor and after 3.2 seconds landed 10 meters ahead. Calculate the average velocity in x (vx), the initial velocity in y (viy), the initial velocity (vi), and the maximum height (ymax)

Your roommate drops a tennis ball from a third-story balcony. It hits the sidewalk and bounces as high as the second story. Draw a motion diagram, using the particle model, showing the ball’s velocity vectors from the time it is released until it reaches the maximum height on its bounce.

An object is thrown straight upward with an initial velocity of 11.7 m/s. What is the object's maximum upward displacement? Enter a number assuming proper SI Units.

A cannon fires a cannonball directly upward at 300 m/s. How long (in s) does the cannonball move upward before stopping, and what is the maximum height (in m) reached by the cannonball?

You drive West 30.0 km at 85 km/h and then drive East another 60.0 km at 95 km/h. Your average velocity for the entire drive will be... How would I go about solving this problem?

(a) Calculate the height (in m) of a cliff if it takes 2.19 s for a rock to hit the ground when it is thrown straight up from the cliff with an initial velocity of 8.06 m/s. (Enter a number.) 5.8 m (b) How long (in s) would it take to reach the ground if it is thrown straight down with the same speed? (Enter a number.)

A model rocket is launched with an initial upward velocity of 195 ft/s. The rocket's height h (in feet) after t seconds is given by the following. h=195t–16 Find all values of t for which the rocket's height is 87 feet. Round your answer(s) to the nearest hundredth. (If there is more than one answer, use the "or" button.) t = || seconds or O ground

QuesuvI Z VETJ Points: 2 Kim is waiting for the results of her physics exam. She walks 8.0 metres north in 5.0 seconds, then 25 metres south in 15.0 seconds, then 10.0 metres north in 10.0 seconds. Use this information to answer the following questions: (1) What is Kim's average speed? (ii) What is Kim's average velocity? DA) Kim's speed is 1.4 m/s B) Kim's speed is 0.23 m/s C) Kim's speed is -0.23 m/s D) Kim's speed is -1.4 m/s E) Kim's velocity is 1.4 m/s [N] F) Kim's velocity is 0.23 m/s [S] G) Kim's velocity is 0.23 m/s [N] ⒸH) Kim's velocity is 1 4 m/s [S] Clear selection Question 3 of 13

You get in your car and drive north, accelerating up to 60mph. Draw your velocity vector and acceleration vector some time during your acceleration. How would these change if you encountered traffic and started to brake?