PHY 121 Exam 2 2025
Fall with 100% correct
answers(VERIFIED BY
PROFESSORS)
Name _______________________
ASU ID#:
_______________________
PHY121 (Jacobs) Exam 2
Practice
On the real test, you will agree to abide by the Test Rules as printed
below
- I am not allowed to work with anyone or anything (e.g., AI), or
use any materials other than a calculator and writing utensil and
whatever the instructor has explicitly allowed. - More
specifically, I understand that use of any of the items below is
strictly prohibited:
o Cell phone or smart
watch o Computer or
tablet o Headphones
or earbuds
, - I understand that receiving or helping to provide unauthorized
aid is prohibited.
- I agree not to discuss exam questions with any student who has
not taken the exam.
- I understand that violating any of the above may result in
confiscation of my exam, an automatic failing exam grade and/or
a referral to the Dean for further sanctions.
________________________________
Signature
Instructions
Use the ANSWER SHEET to mark your multiple-choice answers, but
you must show your work on the attached pages. You may separate
this top sheet from the rest of the rest, but put it back on top when you
hand it in. There are 15 questions.
This is a practice exam. It will not be collected.
There is an answer key on the last page.
, Equations 𝑈/ = 𝑚𝑔𝑦
𝑣! 𝑈
𝑥 = 𝑥% + 𝑣%!𝑡 + &’ 𝐹⃗ 5 =
𝑎!𝑡’
−𝑘Δ𝑥 𝑈5 =
𝑣! = 𝑣%! +
& ’
𝑎!𝑡 ’ 𝑘(Δ𝑥)
𝑣!’ = 𝑣%’! + 2𝑎!(𝑥 −
𝐹⃗! = − "6"!(!)
𝑥%)
𝑎( = $)" J = ∫ 𝐹⃗ 𝑑𝑡
𝜃 = 𝜃% + 𝜔 % 𝑡 + &
= 𝜔’𝑟 ’
𝛼𝑡’
𝑝⃗ = 𝑚𝑣
𝜔 = 𝜔% +
𝐹⃗ *+, =
𝛼𝑡
𝑚𝑎 =
""#- 𝑣 = 𝑟𝜔
𝑎,9* = 𝑟𝛼
𝐹⃗/ = 𝑚𝑔 ∑$ 1 $! $ ∫
= =
1 𝑥(1
∑$ 1$
∫"1"1 )
𝐹⃗ 𝐼 = ∑= 𝑚=𝑟=’ = ∫
𝑊 = ∫ 𝐹⃗
𝑑𝑚 𝑟’ 𝐾 = &
⋅ 𝑑𝑟
𝐼𝜔’
𝐾 𝑚𝑣’
𝑊*+, = Δ𝐾 ’
𝑃 𝐹⃗ 𝜏⃗ = 𝑟 ×
⋅𝑣 𝐹⃗ 𝐿I =
"#
Fall with 100% correct
answers(VERIFIED BY
PROFESSORS)
Name _______________________
ASU ID#:
_______________________
PHY121 (Jacobs) Exam 2
Practice
On the real test, you will agree to abide by the Test Rules as printed
below
- I am not allowed to work with anyone or anything (e.g., AI), or
use any materials other than a calculator and writing utensil and
whatever the instructor has explicitly allowed. - More
specifically, I understand that use of any of the items below is
strictly prohibited:
o Cell phone or smart
watch o Computer or
tablet o Headphones
or earbuds
, - I understand that receiving or helping to provide unauthorized
aid is prohibited.
- I agree not to discuss exam questions with any student who has
not taken the exam.
- I understand that violating any of the above may result in
confiscation of my exam, an automatic failing exam grade and/or
a referral to the Dean for further sanctions.
________________________________
Signature
Instructions
Use the ANSWER SHEET to mark your multiple-choice answers, but
you must show your work on the attached pages. You may separate
this top sheet from the rest of the rest, but put it back on top when you
hand it in. There are 15 questions.
This is a practice exam. It will not be collected.
There is an answer key on the last page.
, Equations 𝑈/ = 𝑚𝑔𝑦
𝑣! 𝑈
𝑥 = 𝑥% + 𝑣%!𝑡 + &’ 𝐹⃗ 5 =
𝑎!𝑡’
−𝑘Δ𝑥 𝑈5 =
𝑣! = 𝑣%! +
& ’
𝑎!𝑡 ’ 𝑘(Δ𝑥)
𝑣!’ = 𝑣%’! + 2𝑎!(𝑥 −
𝐹⃗! = − "6"!(!)
𝑥%)
𝑎( = $)" J = ∫ 𝐹⃗ 𝑑𝑡
𝜃 = 𝜃% + 𝜔 % 𝑡 + &
= 𝜔’𝑟 ’
𝛼𝑡’
𝑝⃗ = 𝑚𝑣
𝜔 = 𝜔% +
𝐹⃗ *+, =
𝛼𝑡
𝑚𝑎 =
""#- 𝑣 = 𝑟𝜔
𝑎,9* = 𝑟𝛼
𝐹⃗/ = 𝑚𝑔 ∑$ 1 $! $ ∫
= =
1 𝑥(1
∑$ 1$
∫"1"1 )
𝐹⃗ 𝐼 = ∑= 𝑚=𝑟=’ = ∫
𝑊 = ∫ 𝐹⃗
𝑑𝑚 𝑟’ 𝐾 = &
⋅ 𝑑𝑟
𝐼𝜔’
𝐾 𝑚𝑣’
𝑊*+, = Δ𝐾 ’
𝑃 𝐹⃗ 𝜏⃗ = 𝑟 ×
⋅𝑣 𝐹⃗ 𝐿I =
"#
