A mass of 0.3 kg hangs motionless from a vertical spring whose length is 0.87 m and whose unstretched length is 0.47 m. Next the mass is pulled down to where the spring has a length of 1.16 m and given an initial speed upwards of 1.2 m/s. What is the maximum length of the spring during the motion that follows

An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !

An object dropped from cliff falls with a constant acceleration of 10 metre per second square find its speed of two seconds after it was dropped