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?

A.Equal to half the track length

0\,m

C.Cannot be zero

D.Equal to the track length

Question 2mcq

Which quantity includes direction?

A.Velocity

B.Distance

C.Time

D.Speed

Question 3mcq

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

A.Shortest distance from start to end

B.Total path length

C.Mass per unit volume

D.Rate of change of velocity.

Question 4mcq

What is the SI unit of acceleration?

m/s

s

m/s^2

m

Question 5mcq

A student walks

3\,m

east and then

4\,m

west. What are distance and displacement?

A.Distance

1\,m

, displacement

7\,m

west

B.Distance

7\,m

, displacement

1\,m

west

C.Distance

0\,m

, displacement

1\,m

west

D.Distance

7\,m

, displacement

7\,m

east

Section B: Application Practice

Question 6mcq

A car moves at

20\,m/s

due north. Which quantity does this describe?

A.Velocity

B.Mass

C.Time period

D.Distance

Question 7mcq

Which example shows acceleration?

A.A book stays on a table.

B.A stopwatch measures time.

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

D.A cyclist changes speed from

4\,m/s

8\,m/s

Question 8mcq

Which pair of SI units is correct?

A.Velocity:

kg

; displacement:

s

B.Velocity:

m/s^2

; displacement:

N

C.Velocity:

m/s

; displacement:

m

D.Velocity:

m

; displacement:

m/s

Question 9mcq

Which statement best distinguishes distance from displacement?

A.Distance has direction but displacement never has direction.

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

C.Both are always equal.

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 are different because direction differs.

B.Their velocities must be identical.

C.Both have zero velocity.

D.Velocity does not depend on direction.