Daily Practice Problems

Class 9 · Science

Ch 7 — Motion

📅 2 September 2026 ✎ 5 Questions ⏰ 10 minutes

The SI unit of speed is:

A. m/s² B. m/s C. km/h only D. s/m

📝 SolutionSpeed is distance per unit time, measured in metres per second (m/s) in SI units.

Distance is a __ quantity while displacement is a __ quantity.

A. vector, scalar B. scalar, vector C. scalar, scalar D. vector, vector

📝 SolutionDistance has only magnitude (scalar), while displacement has both magnitude and direction (vector).

A body moving with uniform velocity has:

A. zero acceleration B. constant non-zero acceleration C. increasing acceleration D. decreasing speed

📝 SolutionUniform velocity means constant speed and direction, so there is no change in velocity, hence zero acceleration.

The area under a velocity-time graph gives:

A. acceleration B. distance/displacement C. speed D. force

📝 SolutionThe area enclosed under a velocity-time graph represents the distance (or displacement) covered.

The slope of a distance-time graph gives:

A. acceleration B. speed C. displacement D. force

📝 SolutionThe slope of a distance-time graph represents the speed of the object.

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Class 9 · Science

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