Question : A particle starts its motion from rest under the action of a constant force. If the distance covered in first 10 𝑠𝑒𝑐𝑜𝑛𝑑𝑠 is 𝑆1 and that covered in the first 20 𝑠𝑒𝑐𝑜𝑛𝑑𝑠 is 𝑆2, then
(A) S_{2}=2S_{1}
(B) S_{2}=3S_{1}
(C) S_{2}=4S_{1}
(D) S_{2}=S_{1}
Answer : option (C)
Solution :
