Question

if for a partical position X is directly proportional to t^2 then
A) velocity is constant
B) acceleration is constant
C) acceleration is variable​

Answer 1

Answer:

Ans. B

Explanation:

Here,x=kt^2, where k is constant

v=dx/dt

so that, v=d(kt^2)/dt

v= 2kt

and, a=dv/dt

=d(2kt)/dt

a=2k

so that acceleration is constant

Answer 2

Answer:

Answer is B

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