Question 1 An object attached to a spring is pulled across a horizontal frictionless surface. If the spring's force constant (spring constant) is 45 N/m and the spring is stretched by 0.88 m when the object is accelerating at 1.4 m/s², what is the object's mass?

• 24 kg
• 31 kg
• 28 kg
• 36 kg

Question 2 Two boxes are connected to each other by a string, as shown in the figure. The 10-N box slides without friction on the horizontal table surface. The pulley is ideal, and the string has negligible mass. What is true about the tension T in the string?

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