Question

a block of slides down frictionless plane having an inclination of 19.6 degree .The blocks start from rest at the top and length of the plane the inclined is 1.8m.draw a free body diagram of block

Answer 1

net acc down the slope

= g sin 15.6

=  2.64 m/s^2

answer

acceleration of the block.

u =0; s = 2.3

v2 = u2 +2as

v^2 = 0 + 2 * 2.64 * 2.3

v = 3.48 m/s

answer

block's speed when it reaches the bottom of the incline