A boy starts moving from origin in - ve x direction with acceleration 2 m/s^2 for 5 second. Then he suddenly reserves his direction without changing his speed and moves with that constant speed for further 5 seconds. find
a) final position of boy
b) displacement in 10s
c) distance covered

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?