Question

The displacement of a particle at a time t is x = a cos t , the acceleration will be

Answer 1

Answer:(-acost)

Explanation:First we differentiate x wrt time to get velocity then again differentiate wrt time to get acceleration....

That's easy....

Answer 2

Answer:

- a cos t

Explanation:

since we know that acceleration is also denoted by d^2x/dt^2 where x , is displacement of the particle

hence we shall differentiate the given eqn = x = a cos t

dx/dt = -a sin t

d^2x/dt^2 = - a cos t