Question

A flowerpot weighing 2 kilograms is accidentally knocked off the window ledge of the top floor apartment in a tall building. What will be its speed at the end of 5 seconds?

Answer 1

Mass of the body does not affect the motion, all bodies fall at the same rate in vacuum. This rate on earth is approximately $9.8m/s^2$. This means the speed increases by $9.8m/s$ every second. So the speed after $t$ seconds is simply $9.8m/s^2\times\,t\,s=9.8t\,m/s$

The speed after $5$  seconds would be $9.8m/s^2\,\times\,5s=49m/s$

Answer 2

speed is 98 meters per second and the weight of the pot does not effect the speed of the body speed after 5sec is 49 meaters per second