Question

If x denotes displacement in time t and x = a cost,
then acceleration is :
(1) a cost
(2) -aicost
(3) a sint
(4) -a sin t​

Answer 1

Answer:

option 2

Explanation:

we know that

dx/dt=v

v=d(acost)/dt

=-asint

we also know that

a=dv/dt

=d(-asint)/dt

=-acost

(we can also say that a=d²x/dt² or a=double differentiation of x)

Hope this helps.