Question

The acceleration of a train travelling with speed of 400 m/s as it goes round a curve of radius 160 m, is

• A. $1km/s^2$
• B. $100m/s^2$
• C. $10m/s^2$
• D. $1m/s^2$

Answer 1

The correct option is A $1km/s^2$

$\alpha =\frac{v^2}{r}=\frac{(400{)}^2}{160}={10}^{3}m/s^2=1km/s^2$