A Block of Mass M=3 $v _ { \mathrm { i } } = 9.3 \mathrm {~m} / \mathrm { s }$

question 100

Multiple Choice

A block of mass m=3.6 kg, moving on a frictionless surface with a speed $v _ { \mathrm { i } } = 9.3 \mathrm {~m} / \mathrm { s }$
sudden perfectly elastic collision with a stationary block of mass M , as shown in the figure. Just
after the collision, the 3.6-kg block recoils with a speed of $v _ { f } = 2.7 \mathrm {~m} / \mathrm { s }$
other block? What is the speed V of the

• A) 10.7 m/s
• B) 12.0 m/s
• C) 9.3 m/s
• D) 6.6 m/s
• E) 8.0 m/s

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