A ecreases CHR QUESTION 20 A force acts on a 2.1 kg object in such a way that the position as a function of time is given by x=0.92t-0.87+1.8³ (xi in meters, in work done on the object by the force from t= 0 and t = 8.9 s. OA.438765 J OB. 631052 J OC. 105384 J OD. 198378 J E. 179242 J th a speed of 25.0 m/s in an easterly direction crashes into the rear end of a 9,40 car right after the collision is 18.0 m/s to the east. The velocity of the truck

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Chapter9: Momentum And Its Conservation
Section9.1: Impulse And Momentum
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OE. decreases
QUESTION 20
A force acts on a 2.1 kg object in such a way that the position as a function of time is given by x=0.92t-0.87+1.8t (x is in meters, 1 is in seconds) Find the
work
done on the object by the force from t=0 and t = 8.9 s.
OA. 438765 J
OB. 631052 J
OC. 105384 J
OD. 198378 J
OE. 179242 J
8.0 m/s
A
with a speed of 25.0 m/s in an easterly direction crashes into the rear end of a 9,40
e car right after the collision is 18.0 m/s to the east. The velocity of the truck
Transcribed Image Text:OE. decreases QUESTION 20 A force acts on a 2.1 kg object in such a way that the position as a function of time is given by x=0.92t-0.87+1.8t (x is in meters, 1 is in seconds) Find the work done on the object by the force from t=0 and t = 8.9 s. OA. 438765 J OB. 631052 J OC. 105384 J OD. 198378 J OE. 179242 J 8.0 m/s A with a speed of 25.0 m/s in an easterly direction crashes into the rear end of a 9,40 e car right after the collision is 18.0 m/s to the east. The velocity of the truck
he radius is doubled keeping the speed the san
as great
as great
QUESTION 25
A force F= (4.1 N)+(2.6 N)-(4.7 N) acts on a mass of 2.3 kg as it moves in the x direction at a speed of 7.2 ms. What is the ate at which the face is doing
work?
OA. 49 W
OB. 16 W
O C. 30 W
O D.8.8 W
it to save and submit. Click Save All Answers to save all answers,
O E. 60 W
MacBook Air
o
Transcribed Image Text:he radius is doubled keeping the speed the san as great as great QUESTION 25 A force F= (4.1 N)+(2.6 N)-(4.7 N) acts on a mass of 2.3 kg as it moves in the x direction at a speed of 7.2 ms. What is the ate at which the face is doing work? OA. 49 W OB. 16 W O C. 30 W O D.8.8 W it to save and submit. Click Save All Answers to save all answers, O E. 60 W MacBook Air o
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