Ans. The range of a projectile is the horizontal distance it travels before hitting the ground. It can be calculated using the formula R = (v^2 * sin(2θ)) / g, where R is the range, v is the initial velocity of the projectile, θ is the angle of projection, and g is the acceleration due to gravity. This formula takes into account the horizontal component of the initial velocity and the effect of gravity on the vertical motion of the projectile.