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

question 68

Multiple Choice

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)0.0 kg
• D)0.7 kg

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Definitions:

Muscle Fitness

Concerns the strength, endurance, and overall health of muscles, achievable through regular exercise and proper nutrition.

Chronic Diseases

Long-term medical conditions that are generally progressive and can be controlled but not cured, such as diabetes, asthma, and heart disease.

Diabetes

A chronic condition characterized by high levels of sugar in the blood, due to the body's inability to produce or effectively use insulin.

Eccentric Contraction

A type of muscle contraction that occurs when the muscle elongates while under tension, often associated with controlled lowering movements.