When an object is dropped, the distance it falls in t seconds, assuming that air resistance is negligible, is given by s(t)equals=4.9054.905t2 where s(t) is in meters (m). If a stone is dropped from a cliff, assuming that air resistance is negligible, find the velocity and acceleration of the stone after it had been falling for 1515 sec.

velocity = 147.15 m/s

Acceleration = 9.81 m/s²

Step-by-step explanation:

s(t )= 4.905t²

the  velocity, ds / dt = 2 * 4.905 t

= 9.81 t

if

t = 15 secs

velocity, which is

ds / dt = 9.81 * 15

= 147.15 m/s

Acceleration,

dv / dt = 9.81

After 15 secs, the acceleration is

9.81 m/s²

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

step-by-step explanation:

given   that triangle lno is congruent to triangle lnm.

we have to fill up the blanks in the given question.

according to above order of congruency   kept in mind we can say that

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

ln ≅ ln due to common in both.

hence, by sas congruency,

the side angle side rule   states that if two sides and the included angle of one triangle are congruent to another triangle, then these two triangles are congruent.