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Q1. You push a 2.0 kg block against a horizontal spring, compressing the spring by 15 cm. When you release the block, the spring forces it to slide across a table top. It stops 75 cm from where you released it. The spring constant is 200 N/m. Determine the coefficient of kinetic friction between the block & the table?

A. .234
B. .052
C. .320
D. .191

Q2. A projectile whose mass is 9.4 kg is fired vertically upward. On its upward flight, an energy of 68 kJ is dissipated because of air drag. How much higher would it have gone if the air drag had been made negligible?

A. 1.25 m
B. 0.50 m
C. 0.74 m
D. None of the above

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