Distinguish between speed and velocity, and give one example where the speed is constant but the velocity is changing.
Motion in One Dimension
Original Khojo Papers practice question — not from a past board paper.
Distance is the total length of the path travelled and is a scalar, so it is never negative. Displacement is the shortest straight-line length from the starting point to the finishing point together with its direction, and it is a vector, so it can be zero even when the distance is large.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
For a body returning to its starting point the displacement is zero but the distance is not.
From the same topic and chapter, at a similar level.
Distinguish between speed and velocity, and give one example where the speed is constant but the velocity is changing.
Motion in One Dimension
A body travels 120 m in 40 s. Calculate its average speed.
Motion in One Dimension
A body starts from rest and moves with a uniform acceleration of 2 m s−2 for 5 s. Find its final velocity and the distance travelled.
Motion in One Dimension
A car moving at 20 m s−1 is brought to rest in 5 s. Find its retardation and the distance it travels in that time.
Motion in One Dimension
A body travels with a uniform velocity of 15 m s−1 for 4 s and then accelerates at 2 m s−2 for a further 3 s. Find the total distance travelled.
Motion in One Dimension
What does the slope of a distance-time graph represent, and what does the area under a velocity-time graph represent?
Motion in One Dimension