Question

e. A ball falls off a table and reaches
the ground in 1 s. Assuming g= 10
m/s², calculate its speed on reaching
the ground and the height of the
at
t
table.
Ans. 10 m/s and 5 m​

Answer 1

Answer:

Step-by-step explanation:

given: time taken (t)= 1 sec

         acceleration (g)= 10 m/s²

here initial velocity (u)=0     (fallen from rest)

(i)  speed on reaching the ground,

v = u +gt    

v = 0+ 10 * 1

v = 10 m/s

(ii) Height from where ball fallen,

s = ut + 1/2 g t²

  = (0)*1 + 1/2 * 10 * (1)²

  = 5 m