Question

The dislacement is given by x=2+4t+5t^2.find the value of instantaneous acceleration

Answer 1

instantaneous accelaration is given by
a = 10m/s^2

Answer 2

Just differentiate it twice, you will get a = 10m/s^2. Or compare it with the displacement equation, ignore the 2 because that's the starting point. You will see on comparing (1/2)a=5 or a= 10.