A block of mass m = 4.4 kg, moving on frictionless surface with a speed $v_ { \mathrm { i } } = 9.2 \mathrm {~m} / \mathrm { s } ,$ makes a sudden perfectly elastic collision with a second block of mass M, as shown in the figure. The second block is originally at rest. Just after the collision, the 4.4-kg block recoils with a speed of $v_ { \mathrm { f } } = 2.5 \mathrm {~m} / \mathrm { s } .$ What is the mass M of the second block?
A)7.7 kg
B)0 kg
C)(0) kg.
D)0 kg.
E)0 kg..

Question

A block of mass m = 4.4 kg, moving on frictionless surface with a speed $v_ { \mathrm { i } } = 9.2 \mathrm {~m} / \mathrm { s } ,$ makes a sudden perfectly elastic collision with a second block of mass M, as shown in the figure. The second block is originally at rest. Just after the collision, the 4.4-kg block recoils with a speed of $v_ { \mathrm { f } } = 2.5 \mathrm {~m} / \mathrm { s } .$ What is the mass M of the second block? 
A)7.7 kg 
B)0 kg 
C)(0) kg. 
D)0 kg. 
E)0 kg..

Quizplus · Accepted Answer

The Answer of A block of mass m = 4.4 kg, moving on frictionless surface with a speed $v_ { \mathrm { i } } = 9.2 \mathrm {~m} / \mathrm { s } ,$ makes a sudden perfectly elastic collision with a second block of mass M, as shown in the figure. The second block is originally at rest. Just after the collision, the 4.4-kg block recoils with a speed of $v_ { \mathrm { f } } = 2.5 \mathrm {~m} / \mathrm { s } .$ What is the mass M of the second block? 
A)7.7 kg 
B)0 kg 
C)(0) kg. 
D)0 kg. 
E)0 kg..

A Block of Mass M = 4 vi=9.2 m/s,v_ { \mathrm { i } } = 9.2 \mathrm {~m} / \mathrm { s } ,vi​=9.2 m/s,

A Block of Mass M = 4 $v_ { \mathrm { i } } = 9.2 \mathrm {~m} / \mathrm { s } ,$