(Solved):   An ion's position vector is initially 7 = (6.5 m )i + (9.3 m ))+ (-4.8 m ). and 9.0s later ...

 

An ion's position vector is initially 7 = (6.5 m )i + (9.3 m ))+ (-4.8 m ). and 9.0s later it is = (5.6 m )i + (7.5 m )j + (-9.1 m) ). In unit-vector notation, what is its average velocity during the 9.0 s? 10:24 A Number Units A projectile is fired horizontally from a gun that is 35.0 m above flat ground, emerging from the gun with a speed of 150 m/s. (a) How long does the projectile remain in the air? (b) At what horizontal distance from the firing point does it strike the ground? (c) What is the magnitude of the vertical component of its velocity as it strikes the ground? (a) Number Units (b) Number i Units 10:24 A (c) Number Units In the figure, a stone is projected at a cliff of height h with an initial speed of 43.0 m/s directed at an angle 8-59.0° above the horizontal. The stone strikes at A, 5.23 s after launching. Find (a) the height h of the cliff, (b) the speed of the stone just before impact at A, and (c) the maximum height H reached above the ground. Use g-9.80 m/s². H AMOR WOCH B (a) Number Units (b) Number i Units 10:24 A (c) Number i Units v?i #