If a ping pong ball and a basketnall were both dropped at the same time from the roof of our school ,which would hit the ground with a greater force ? common sense tells us that the basketball ball would. the difference in forces would be caused by the different masses of the balls . newton stated this relationship in his second law ,the force of an object is equal to its mass times its acceleration . what are two other situations where newton's 2nd law may apply ?

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?