Write the acceleration in the form aTT + aNN. 8) r(t) 8 cos -t – 3 |j + 12tk

13 - If the velocity V(t) = 20+4t, find the speed and the acceleration at t=2s. O A) 28 m/s & zero OB) 24 m/s & 4 m/s OC) 24 m/s & zero O D) 28 m/s & 4m/s? O E) Zero & 4m/s2

A ball is launched from a 10.0 m building with an initial speed of 15.0 ?/?. If the ball’s speed when it reaches its maximum height is 1/3 its speed when it is at half its maximum height, determine ball’s launch angle and the ball’s angle at impact.  This is all the information i was given!

Starting at timet t = 0 an object starts moving along a straight line. Its coordinate in meters is given by: x(t) = 7t - 4t ^ 3 in seconds. When it momentarily stops its acceleration is: