Question

A bullet of mass 50gm fired from a gun hits a wooden plank of thickness 20cm with a
speed 100m/s and emerges out with a speed 80m/s. Calculate the resistance offered by the
plank.
water tank of yolume 32m3 is at a height of 1 m above the ground level. How much​

Answer 1

Answer:

54782=53870mg h54355. 24

Answer 2

40+33+45=118 ok thanks