9. A 2.00 kg object has a velocity of 2.00 m/s in the +x-direction. After the force shown below acts on the object, the object's new velocity equals F, (N) a) 1.67 m/s b) 2.50 m/s c) 2.33 m/s d) 3.17 m/s 2 t (s) e) 4.20 m/s -2 Impulse = area
9. A 2.00 kg object has a velocity of 2.00 m/s in the +x-direction. After the force shown below acts on the object, the object's new velocity equals F, (N) a) 1.67 m/s b) 2.50 m/s c) 2.33 m/s d) 3.17 m/s 2 t (s) e) 4.20 m/s -2 Impulse = area
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This a not graded assignment, it is a question on a practice exam.
Please do question 9.
Transcribed Image Text:8. A car and a truck collide. The momentum of the system of car and truck will be
a) conserved if the collision is elastic.
b) conserved if the collision is perfectly inelastic.
c) perfectly conserved if the net internal force >> net external force.
d) approximately conserved if Frc = FcT >> |f + D|
9. A 2.00 kg object has a velocity of 2.00 m/s in the +x-direction. After the force shown below acts
on the object, the object's new velocity equals
F, (N)
a) 1.67 m/s
b) 2.50 m/s
с) 2.33 m/s
d) 3.17 m/s
e) 4.20 m/s
2-
t (s)
S
Impulse =
under curve
10. Which one of the following objects is in static
equilibrium?
А.
С.
D.
а) А
b) В
c) C
d) D
e) None of the objects are in static equilibrium.
B.
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