Motion Test

Result

Motion Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

What do you infer, if s-t graphs of two cyclists meet at a point?

A
They pass each other

B
They collide

C
They are starting from rest

D
They are at rest

Solution

If S-t graphs of two cyclists meet at a point, then it implies that they pass each other.
Question 2
1 / -0

What is the direction of velocity in a circular motion at any point?

A
Towards the centre of the circle

B
Along the tangent drawn at that point

C
Away from the centre of the circle

D
Cannot be determined

Solution

The direction of velocity in a circular motion at any point is along the tangent drawn at that point.
Question 3
1 / -0

If a person walked at a speed of 2 m/s for 12 s. What distance that person must have travelled?

A
24 m

B
6 m

C
4 m

D
none of the answers

Solution

Distance = speed × time

= 2 m/s × 12 s

= 24 m
Question 4
1 / -0

Rate of change of displacement with time is called

A
deceleration

B
velocity

C
acceleration

D
speed

Solution

Rate of change of displacement with time is called velocity.
Question 5
1 / -0

Alex walks along a curved path and takes several turns while walking from home to school. How can you best describe his displacement?

A
It is the general direction in which she travelled.

B
It is the total distance she travelled

C
It is the straight line distance between her home and school along with the direction from home to school.

D
It is the straight line distance from her home to the school and back.

Solution

To define displacement we need both: the distance travelled and the direction.
Question 6
1 / -0

A boy throws a ball up and catches it when the ball falls back. In which part of the motion the ball is accelerating?

A
During downward motion

B
When the boy catches the ball

C
During upward motion

D
When the ball comes to rest

Solution

As the ball goes up, its speed decreases. As it comes down, its speed increases. Thus, it accelerates while coming down.
Question 7
1 / -0

Distance covered by a body from velocity-time graph is

A
Is denoted by a line parallel to the time axis at any point on the distance axis.

B
Equal to the slope of the graph.

C
Is denoted by a line parallel to the distance axis at any point on the time axis.

D
Area under the graph .

Solution

Distance covered by a body from velocity-time graph is area under the graph.
Question 8
1 / -0

A cat runs around the boundary of a square field of side 6 m in 10 s. The displacement of the cat in 1 minute is

A
10 m

B
20 m

C
60 m

D
zero

Solution

The displacement of the cat in 1 minute is zero as its initial and final position is same.
Question 9
1 / -0

How much distance a car covers when it moves 20 km East and then 60 km West?

A
40 km

B
20 km

C
60 km

D
80 km

Solution

As distance does not depend on direction. Hence, Total Distance = (20 + 60) km = 80 km.

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Re-Attempt Weekly Quiz Competition

Motion Test - 4

Result

Motion Test - 4

Score

-

Rank

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SHARING IS CARING

Question 1

They pass each other­

They collide

They are starting from rest

They are at rest

Solution

Question 2

Towards the centre of the circle

Along the tangent drawn at that point

Away from the centre of the circle

Cannot be determined

Solution

Question 3

24 m

6 m

4 m

none of the answers

Solution

Question 4

deceleration

velocity

acceleration

speed

Solution

Question 5

It is the general direction in which she travelled.

It is the total distance she travelled

It is the straight line distance between her home and school along with the direction from home to school.

It is the straight line distance from her home to the school and back.

Solution

Question 6

During downward motion

When the boy catches the ball

During upward motion

When the ball comes to rest

Solution

Question 7

Is denoted by a line parallel to the time axis at any point on the distance axis.

Equal to the slope of the graph.

Is denoted by a line parallel to the distance axis at any point on the time axis.

Area under the graph .

Solution

Question 8

10 m

20 m

60 m

zero

Solution

Question 9

40 km

20 km

60 km

80 km

Solution

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They pass each other