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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > The position vector of a particle changes with time according to the relation r→(t)=15 t^2 iˆ+(4−20 t^2)jˆ What is the magnitude of the acceleration at t = 1?

The position vector of a particle changes with time according to the relation r→(t)=15 t^2 iˆ+(4−20 t^2)jˆ What is the magnitude of the acceleration at t = 1?

The position vector of a particle changes with time according to the relation r→(t)=15 t^2 iˆ+(4−20 t^2)jˆ What is the magnitude of the acceleration at t = 1?