Question

A body is projected up a 45° rough incline. If the V
coefficient of friction is 0.5, then the retardation of
the block is​

Answer 1

Answer:

Explanation:

retardation is nothing but acceleration due to opposing forces

so

ma = mg sinθ + f      

ma = mg sin θ + mg cosθ ( coefficient of friction)

mass gets cancelled

now substitute all values

u have angle=45

and g=10 and coefficient of friction=0.5

and u will finally get retardation which is nothing but a here