Question

I get angry and throw a pen straight down to the floor. I throw it with an initial speed of 25 m/s. It took 0.25 second to fall. What is the velocity of the pen just before it hit the floor?​

Answer 1

v2=u2+2as

v2=0×2×25×0.25

v2=25×0.25

v2=6.25m/s2