Answer part a and part b for full credit. remember to identify all your data, write the equation, and show your work. martha was leaning out of the window on the second floor of her house and speaking to steve. suddenly, her glasses slipped from her nose. the glasses hit the ground in 2.2 seconds. neglecting the effects of air resistance, answer the questions below. a. what is the height of the window from the ground? b. what was the impact velocity of the glasses?

How much force must a locomotive exert on a 12840-kg boxcar to make it accelerate forward at 0.490 m/s2?

How to tell if a molecule is polar or nonpolar with electronegativity

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?