12) just need plus and minus sign for answer 11) & 13) correct letter answer Ple

Question

12) just need plus and minus sign for answer 11) & 13) correct letter answer
Please answer ALL questions CORRECTLY. Can't post seperately, ran out of questions on chegg. No work needs to be shown. Just need the CORRECT answer. Thank you.


12. Supply the signs for acceleration: Position Velocity Acceleration Speed increasing Increasing decreasing decreasing increasing increasing t decreasing D decreasing 13. An object is accelerating in empty space subject to force F. Suddenly, an equal force F is applied in the opposite direction. The object a. quickly slows to a stop with negative acceleration. b. gradually slows to a stop with acceleration depending on its mass. c. continues at the speed it had when the second force was applied. d. immediately reverses its direction and accelerates in the new direction.

Explanation / Answer

As requested, I have provided the answers only. Do check

12)

a) +

b) -

c) -

d) +

e) +

f) -

g) -

h) +

13)

c) continues with the speed it had when the seond force was applied

14)

Let distance traveled be s

So, 140^2 = 0^2 + 2*a*s

for 70 km/h,

70^2 = 0^2 + 2a*s'

So, 2^2 = s/s'

So, s' = s/4 <---- before marker 1

So, answer is a) before marker 1

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