Question

Because the man is slowing down, his velocity decreases over time. Use the final and starting velocities in the data table to calculate his average acceleration. Use the equation , where t is time, ux is initial velocity, vx is final velocity, and ax is acceleration. Use time t = 2.2 seconds, which is calculated using values from the table (2.4 − 0.2).

Answer 1

Answer: a = 0.795 m/s

Explanation:

4.34 - 2.59 = 1.75

1.75 / 2.2 = average accleration

Answer 2

`the \: ( - )acceleration \: or\\ \: reterdation = (( v_(x) -u_(x)) )/(2.2) {m(s)}^( - 2)`

Step-by-step explanation:

`if \: initial \: velocity \: = u_(x) \\ if \: final \: velocity \: = v_(x) \\ if \: time \: is \: = 2.2s \\...(since \: displacement \: is \: not \: mentioned) \\ the \: required \: equation \: for \: motion\: is : \\ v_(x) = u_(x) + at \\ a = (( v_(x) -u_(x)) )/(t)= (( v_(x) -u_(x)) )/(2.2) {m(s)}^( - 2) \\ \\ note.......you \: did \: not \: provide \: the \: actual \\ value \: of \: v_(x) \: and \: u_(x). \\ just \: insert \: thier \: values \: in \: the \: above \\\: equation \: i \: proided \: to \: get \: the \: acceleration. \\ the \: value \: of \: this \: acceleration \: should \: be\\ \: negative \: since \: it \: decreses \: with \: time \: (reterdation).`