Question

the motion of a particle of mass 'm' is described by y=ut+1/2at*2. Find the force acting on the particle.

Answer 1

hey there is a answer !!
I hope you help !!!!
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=>. y = ut + ½ gt2

Differentiate y with respect to t which gives velocity as dy/dt = v

dy/dt = u + ½ g (2t)

v=u + gt -------------------Eqn (1) 

Differentiate v with respect to t which gives velocity as d2y/dt2 = dv/dt = a

dv/dt = 0 + g

a = g  ----------------------Eqn (2)

We know that force acting on a mass m is given by F = ma

Now from Eqn (2), substitute a =g, Hence, F = mg

Answer 2

Answer: don't worry here is the answer :)

Explanation:

Thus the given equation describes the motion of a particle under acceleration due to gravity and y is the position coordinate in the direction of g

Hope it helps....