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23 Nov 2019

Block A, with a mass of 4 kg., is moving with a speed of 2 m/s while block B, with a mass of 8 kg. is moving in the opposite direction with a speed of 3 m/s. The center of mass of the two block system is moving with a velocity of....

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Collen Von
Collen VonLv2
23 Nov 2019

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions


A block of mass m = 2.2 kg, moving on a frictionless surface with aspeed of initial velocity = 6.3m/s, makes a perfectly elasticcollision with a block of mass M at rest. After the collision, the2.2 block recoils with a speed of final velocity = 1.2 m/s. In fig.8.1, the blocks are in contact for 0.20 s. The average force on the2.2 kg, while the two blocks are in contact, is closest to:
A) 83 N
B) 69 N
C) 56 N
D) 76 N
E) 13 N

A 2.1-kg block moving to the right with a speed of 4.9 m/s collideswith a 3.1-kg block that is moving in the same direction at 1.9m/s, as in the figure below. After the collision, the 3.1-kg blockmoves to the right at 3.8 m/s.

(a) Find the velocity of the 2.1-kg block after thecollision.
m/s

(b) Find the coefficient of restitution between the two blocks.

A 3.0 kg block moving with a velocity of+3.8 m/s makes an elasticcollision with astationary block of mass 2.0 kg.

(a) Use conservation of momentum and thefactthat the relative speed of recession equals the relative speedofapproach to find the velocity of each block afterthecollision.
m/s (for the 3.0kg block)
m/s (for the 2.0kg block)

(b) Check your answer by calculating the initial and finalkineticenergies of each block.
J (initially for the 3.0 kg block)
J (initially for the 2.0 kg block)

J (finally for the 3.0 kg block)
J (finally for the 2.0 kg block)

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