Practice Pakistan questions with answers and explanations.
Choose an option to check your answer.
Average speed uses total path length.
It does not depend on direction.
Choose an option to check your answer.
Leading zeros are not significant, but trailing zeros after a decimal are.
Thus 4, 5, and the final zero are significant.
Choose an option to check your answer.
Vector addition replaces multiple vectors with an equivalent single vector.
Its direction and magnitude depend on the original vectors.
Choose an option to check your answer.
Convert 1/4 to 2/8.
Then 7/8 - 2/8 = 5/8.
Choose an option to check your answer.
Perpendicular vector components form a right triangle.
The resultant magnitude is found from the sum of squared components.
Choose an option to check your answer.
Multiply numerators and denominators, then simplify.
(3 × 10)/(5 × 9) = 30/45 = 2/3.
Choose an option to check your answer.
One kilometre equals 1,000 metres.
Therefore 3.5 km = 3.5×1,000 = 3,500 m.
Choose an option to check your answer.
Dividing by a fraction means multiplying by its reciprocal.
Thus, 4/7 × 3/2 = 12/14 = 6/7.
Choose an option to check your answer.
One metre equals 100 centimetres.
Therefore 250 cm ÷ 100 = 2.5 m.
Choose an option to check your answer.
The metre is the SI base unit of length.
Other metric length units are derived from it using prefixes.
Choose an option to check your answer.
The kilogram is the SI base unit of mass.
The gram is one-thousandth of a kilogram.
Choose an option to check your answer.
The second is the SI base unit of time.
Minutes and hours are accepted non-SI units derived from it.
