A particle starts its motion from rest under the action of a constant force. If the distance covered

Question

A particle starts its motion from rest under the action of a constant force. If the distance covered in first 10 seconds is $S_{1}$ and that covered in the first 30 seconds is $S_{2}$, then\

Professor PC Thomas Classes · Answer

(b) : Given $u=0$. Distance travelled in $10 \mathrm{~s}, S_{1}=\frac{1}{2} a \cdot 10^{2}=50 a$\ Distance travelled in $30 \mathrm{~s}, S_{2}=\frac{1}{2} a \cdot 30^{2}=450 a \quad 	herefore S_{2}=9 S_{1}$\