Question

A smooth body is released from rest A at a point A at the top of a smooth curved track of vertical height 40 cm. What is d speed at d bottom of the curved track. How far along the adjoining smooth inclined plane will d body go?

Answer 1

first I say my answer is 80 what the answer I don't know when the answer is right you mark me brainlist

pe=mgh

mg xam 0.40 j

v= under root 2 x 9.8 x 0.4=2.8 m/s

40 by sin 30 degree equal to 80 cm

Answer 2

answer is 2.8 m/s and 80 cm