Question

A body of mass 15 kg is projected vertically upwards ,with a velocity of 29.4 m/s .Find the kinetic and potential energy at the starting and the highest point? ​

Answer 1

Answer:

19.8 m/s

Step-by-step explanation:

K.E at point of launch = total M.E. (since these as no P.E at launch)

=580+1380 (since there is no non-conservation force, so ME is conserved)

⇒

2

1

mv

2

=1960

⇒v

2

=

5

1960

⇒v=19.8 m/s