A ball rolls along the top of a 2.8 m high table with a constant velocity. It reaches the edge of the desk and hits the ground 0.35 m from the dusk. What was the initial velocity of the ball as it rolled across the table? Please help asap!

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

the given statement is true.

sensory memory lasts for a fraction of seconds before the information is lost. it is the shortest -term memory and can be called as an element of memory. example: when we look at something and remember what it looks like, is just a second of observation. it degrades very quickly. it can also be considered as the process of perception rather than considering it as a memory.