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Q1. Assume a rocket launches with an acceleration of 34 m/s2. What is the apparent weight of a 94 kg astronaut aboard this rocket?

Q2. A ceiling fan with 89 cm diameter blades is turning at 65 rpm. Suppose the fan coasts to a stop 28 s after being turned off.

Q3. An insulated Thermos contains 210 cm3 of hot coffee at 88 °C. You put a 19.00 g ice cube at its melting point to cool the coffee. By how many degrees has the coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though it were pure water and neglect energy exchanges with an environment.

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  • Category:- Physics
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