Question

A stone is throun in a vertically
upuard direction with a velocity
of 5 ms. If the acceleration of the
stone during its motion is 10m
in the downtoard direction that
will be the height attained by the
stone and how much time will in
tale to reach there?​

Answer 1

Explanation:

Given, initial velocity, u=5ms

−1

Final velocity, v=0

Since, u is upward & a is downward, it is a retarded motion.

∴a=−10ms

−2

Height attained by stone, s=?

Time take to attain height, t=?

(i) Using the relation, v

2

−u

2

=2as, we have

s=v

2

−u

2

/2a

=(0)

2

−(5)

2

/2×(−10)=1.25m

(ii) Using the relation, v=u+at

0=5+(−10)t or

t=5/10=0.5s

Answer 2

Answer:

hope it helps you........