A particle moving with a uniform acceleration along a straight line covers distance 𝑎 and 𝑏 in successive intervals of 𝑝 and 𝑞 second. The acceleration of the particle is

Question : A particle moving with a uniform acceleration along a straight line covers distance 𝑎 and 𝑏 in successive intervals of 𝑝 and 𝑞 second. The acceleration of the particle is