The process by which heat from the Sun reaches Earth is MCQ with Answer and Explanation

Explanation:
Weight = mg. On moon, weight = 60×(g/6)/g = 10 kg wt. Mass remains 60 kg, but weight is 10 kg force.

Explanation:
Newton's second law: F = ma ⇒ a = F/m = 20 N / 5 kg = 4 m/s². Direct application of fundamental dynamics equation. Memory tip: Always convert to SI units first; here already in kg and N. Basic numerical testing F=ma application, commonly appearing in competitive exams to verify formula recall and unit handling.

Explanation:
Area under v-t graph gives displacement (distance if velocity doesn't change sign). Slope of x-t gives velocity. Slope of v-t gives acceleration. Area a-t gives change in velocity.