A 4 kg block with a 1 kg block stacked on top initially slides at 2 m/s on a rough, horizontal
...
Physics, 07.03.2020 03:43 drelisech6467
A 4 kg block with a 1 kg block stacked on top initially slides at 2 m/s on a rough, horizontal
surface. The blocks continue to move as a unit with no sliding between the two. The blocks come to rest 1 m
away.
15. How much work did kinetic friction from the surface below do on the 4 kg block during this process?
a) -2 J
b) -6 J
c) -10 J
d) -14 J
e) -18 J
16. How much work did static friction from the 1 kg block above do on the 4 kg block during this process?
a) +2 J
b) +6 J
c) +10 J
d) +14 J
e) +18 J
17. What is the coefficient of kinetic friction between the 4 kg block and the surface below?
a) 0.35
b) 0.30
c) 0.25
d) 0.20
e) 0.15
Expert
Answers: 3
Physics, 23.06.2019 00:50
A980-kg sports car collides into the rear end of a 2300-kg suv stopped at a red light. the bumpers lock, the brakes are locked, and the two cars skid forward 2.6m before stopping.the police officer, estimating the coefficient of kinetic friction between tires and road to be 0.80, calculates the speed of the sports car at impact. what was that speed?
Answers: 3
Physics, 23.06.2019 01:10
Calculate 9 ∙ 10-5 divided by 3 ∙ 10-9. (box after the "10" in answer is for the
Answers: 1
Physics, 23.06.2019 02:20
If 130 j of energy were added to 1 kg of each of the samples listed in the answer choices, which would experience the greatest temperature increase
Answers: 2
Physics, 23.06.2019 09:30
Mrs. smith does her daily chores. she walks 5 m to the laundry room and then turns around and walks -14 m to the kitchen. the whole process takes her 11 minutes. what was her average velocity for these events? (choose more than 1) a. 1.48 m/s b. 0.212 m/s c. -0.136 m/s d. -0.0075 m/s
Answers: 3
Biology, 30.03.2021 20:50
Computers and Technology, 30.03.2021 20:50
Mathematics, 30.03.2021 20:50
English, 30.03.2021 20:50
Mathematics, 30.03.2021 20:50
Mathematics, 30.03.2021 20:50
Mathematics, 30.03.2021 20:50
Mathematics, 30.03.2021 20:50
English, 30.03.2021 20:50
Mathematics, 30.03.2021 20:50