Which scientist developed the theory of general relativity extending special relativity to include gravity?

Which statement correctly distinguishes mass from weight?

After completing one full lap of a circular track, a runner's displacement is:

At the top of its path, an upward-thrown ball has:

Which statement best defines a physical quantity?

Reaction time when starting a stopwatch is mainly a source of:

A car moving at 10 m/s accelerates at 2 m/s^2 for 5 s. Distance covered is:

A body starts from rest with constant acceleration and covers distance S in 4 s. How much time does it take to cover S/4?

Which option gives the two essential parts of a measurement?

A speed-time graph has zero gradient when the body moves with:

Which example best represents a random error?