Question

Explain 2nd part of this question pl​

Answer 1

Explanation:

The object is thrown up, so we need to find out the time in which it reaches the top

Answer 2

Answer:

u= 0,as it was in rest

v=14m/a,that solved in (1)

The third law of motion is

v=u+at

here a will be g because it is thrown upward

v=u-gt

because the object is thrown against the gravity

now putting the values

0=14-9.8×t

t=1.43s