12 10 points Astronauts brought a feather and a hammer into space because they felt like it. They are dropped on the moon from a height of 1.72 meters. The acceleration due to gravity
near the surface of the moon is 1.63m/s2. Find the time in seconds?

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Argon is adiabatically compressed from an initial volume of 16 liters to a final volume of 2 liters. by what factor do the following quantities change? do they increase or decrease? (a) the rms speed (b) the thermal energy of the gas (c) the molar specific heat cv (d) the pressure

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen