Homework Practice

Printable assignment

Motion: Quantities, Direction and Units

Section A: Core Ideas

Question 1mcq

A runner completes one full lap of a circular track and returns to the starting point. What is the displacement?

0\,m

B.Equal to the track length

C.Equal to half the track length

D.Cannot be zero

Question 2mcq

Which quantity includes direction?

A.Speed

B.Velocity

C.Distance

D.Time

Question 3mcq

Which option correctly completes this statement: Acceleration is defined as?

A.Total path length

B.Shortest distance from start to end

C.Rate of change of velocity.

D.Mass per unit volume

Question 4mcq

What is the SI unit of acceleration?

m/s

m

s

m/s^2

Question 5mcq

A student walks

3\,m

east and then

4\,m

west. What are distance and displacement?

A.Distance

7\,m

, displacement

1\,m

west

B.Distance

1\,m

, displacement

7\,m

west

C.Distance

7\,m

, displacement

7\,m

east

D.Distance

0\,m

, displacement

1\,m

west

Section B: Application Practice

Question 6mcq

A car moves at

20\,m/s

due north. Which quantity does this describe?

A.Distance

B.Velocity

C.Time period

D.Mass

Question 7mcq

Which example shows acceleration?

A.A book stays on a table.

B.A car moves with constant velocity on a straight road.

C.A cyclist changes speed from

4\,m/s

8\,m/s

D.A stopwatch measures time.

Question 8mcq

Which pair of SI units is correct?

A.Velocity:

kg

; displacement:

s

B.Velocity:

m/s^2

; displacement:

N

C.Velocity:

m

; displacement:

m/s

D.Velocity:

m/s

; displacement:

m

Question 9mcq

Which statement best distinguishes distance from displacement?

A.Distance is path length; displacement is shortest directed change in position.

B.Both are always equal.

C.Distance has direction but displacement never has direction.

D.Displacement is total path length.

Question 10mcq

Two students have the same speed but move in opposite directions. What is true about their velocities?

A.Their velocities must be identical.

B.Their velocities are different because direction differs.

C.Velocity does not depend on direction.

D.Both have zero velocity.