Pakistan MCQs

Total momentum before equals total momentum after.
For sticking bodies, v = (m₁u₁+m₂u₂)/(m₁+m₂).

Average disappearance rate = decrease in concentration divided by time.
The positive magnitude is used for a reactant-disappearance rate.

Maximum height is H = u²sin²θ/(2g).
Substitution gives the stated value.

For rate ∝ [A]ⁿ, the rate factor equals the concentration factor raised to n.
The observed change gives the stated order.

Range is R = u²sin2θ/g for equal launch and landing heights.
Substitution gives the stated value.

For rate ∝ [A]ⁿ, the rate factor equals the concentration factor raised to n.
The observed change gives the stated order.

Time of flight is T = 2u sinθ/g.
Substitution gives the stated value.

For rate ∝ [A]ⁿ, the rate factor equals the concentration factor raised to n.
The observed change gives the stated order.

Maximum height is H = u²sin²θ/(2g).
Substitution gives the stated value.

For rate ∝ [A]ⁿ, the rate factor equals the concentration factor raised to n.
The observed change gives the stated order.

Range is R = u²sin2θ/g for equal launch and landing heights.
Substitution gives the stated value.

For rate ∝ [A]ⁿ, the rate factor equals the concentration factor raised to n.
The observed change gives the stated order.