Question

In a two dimensional motion, instantaneous speed v0 is a positive constant. Then, which of the following are necessarily true?

Options

• The average velocity is not zero at any time.

• Average acceleration must always vanish.

• Displacements in equal time intervals are equal.

• Equal path lengths are traversed in equal intervals.

Answer 1

Equal path lengths are traversed in equal intervals.

Explanation:

Since speed is a scalar quantity, total distance travelled affects it.

∴ Speed, v₀ = `"Total distance travelled"/"Time taken"`

∴ Total distance travelled = (Speed) × Time taken

∵ Assuming constant speed, the system will travel an equal length of path in an equivalent amount of time.