 # Assignment on Physics Numerical Problem Homework Help Anonymous
account_balance_wallet \$25

### Question Description

I am attaching two files with 21 questions in total. I got some of them worked out, not sure if they are correct, please help me checking them and solve the other ones. Thank you.

### Unformatted Attachment Preview

Aljon2017
School: University of Virginia   Hi, I'm sending HW 1 first...

SOLUTION:
m = 3300 lb x (1 kg / 2.20 lb) = 1500 kg
KEf = 0 (since the car is on a stop)
W = Fd = (6000 N)(60 m) = 360000 J
We can compute the deceleration of the object as follows:
F = ma
a = F/m = 6000 N / 1500 kg
a = 4 m/s2
since the car is decelerating, acceleration has a negative sign and is equal to -4 m/s2
We can compute for the initial velocity using the following relationship:
vf2 = v02 + 2ad
0 = v02 + 2(-4 m/s2)(60 m)
v02 = 480 m2/s2
v0 = 21.9 m/s
KE0 = ½ mv02 = ½ (1500 kg)(480 m2/s2)
KE0 = 360000 J
ΔKE = KEf – KE0 = 0 – 360000 J

ΔKE = -360000 J

SOLUTION:
Case 1: M = mv = (1 kg)(2 m/s) = 2 kg∙m/s
Case 2: M = mv = (2 kg)(1 m/s) = 2 kg∙m/s
They have the same momentum

SOLUTION:
Case ...

flag Report DMCA  Review Anonymous
Thanks, good work Brown University

1271 Tutors California Institute of Technology

2131 Tutors Carnegie Mellon University

982 Tutors Columbia University

1256 Tutors Dartmouth University

2113 Tutors Emory University

2279 Tutors Harvard University

599 Tutors Massachusetts Institute of Technology

2319 Tutors New York University

1645 Tutors Notre Dam University

1911 Tutors Oklahoma University

2122 Tutors Pennsylvania State University

932 Tutors Princeton University

1211 Tutors Stanford University

983 Tutors University of California

1282 Tutors Oxford University

123 Tutors Yale University

2325 Tutors