Motion in One Dimension - ICSE STD 9 PHYSICS Questions

Q 1MCQ1 Mark

At the maximum height, a body thrown vertically upwards has:

A
velocity not zero but acceleration zero.
✓
acceleration not zero but velocity zero.
C
both acceleration and velocity are zero.
D
both acceleration and velocity are not zero.

Answer: B.

View full solution →

Q 2MCQ1 Mark

The distance covered in adjoining velocity - time graph is :

A
25 m
B
40 m
✓
50 m
D
45 m

Answer: C.

View full solution →

Q 3MCQ1 Mark

In velocity time graph, the acceleration is

✓
$-4 m / s ^2$
B
$4 m / s ^2$
C
$10 m / s ^2$
D
zero

Answer: A.

View full solution →

Q 4MCQ1 Mark

A driver applies brakes when he sees a child on the railway track, the speed of the train reduces from $54 km / h$ to $18 km / h$ in 5 s . What is the distance travelled by the train during this interval of time?

A
52 m
✓
50 m
C
25 m
D
80 m

Answer: B.

View full solution →

Q 5MCQ1 Mark

What does the area of an acceleration - time graph represent?

✓
Uniform velocity
B
Displacement
C
Distance
D
Variable velocity

Answer: A.

View full solution →

Q 6[1 Mark Question Answer]1 Mark

A body falls freely downward from a certain height. Show graphically the relation between the distance fallen and square of time. How will you determine 'g' from the graph?

View full solution →

Q 7[1 Mark Question Answer]1 Mark

Give an example of an accelerated body, moving with a uniform speed.

View full solution →

Q 8[2 Mark Question Answer]2 Marks

A spaceship is moving in space with a velocity of $60 kms ^{-1}$. It fires its retro engines for 20 second and velocity is reduced to $55 kms ^{-1}$. Calculate the distance travelled by the spaceship in 40 s , from the time of firing of the retro- rockets.

View full solution →

Q 9[2 Mark Question Answer]2 Marks

From the diagram given below, calculate
1. acceleration
2. deceleration
3. distance covered by body.

(i) Acceleration $=$ Slope of $v$-t graph from O to A
$
=\frac{AC}{OC}=\frac{15}{10}=1.5 ms^{-2}
$

View full solution →

Q 10[2 Mark Question Answer]2 Marks

A racing car is moving with a velocity of $50 m / s$. On applying brakes, it is uniformly retarded and comes to rest in 20 seconds. Calculate its acceleration.

View full solution →

Q 11[2 Mark Question Answer]2 Marks

Copy the following table and fill in the blank spaces.

Quantity	S.I. Unit	Scalar or Vector
Displacement	______________________	______________________
____________________	kg m^-3	________________________

View full solution →

Q 12[2 Mark Question Answer]2 Marks

(a) Distinguish between scalar and vector quantities,
(b) State whether following are scalar or vector quantities
1. speed
2. force
3. acceleration
4. energy

View full solution →

Q 13[3 Mark Question Answer]3 Marks

A stone thrown vertically upwards, takes 4 s to return to thrower. Calculate
(i) initial velocity of the stone
(ii) maximum height attained by stone. (Take $g =10 ms^{-2}$ )

View full solution →

Q 14[3 Mark Question Answer]3 Marks

A stone thrown vertically upwards, takes 3 s to attain maximum height. Calcualte
1. initial velocity of the stone
2. maximum height attained by the stone. (Take $g =9.8 ms^{-2}$ )

View full solution →

Q 15[3 Mark Question Answer]3 Marks

A boy drops a stone from a cliff, reaches the ground in 8 seconds. Calculate
1. final velocity of stone
2. height of cliff. (Take $g=9.8 ms^{\prime} 2$ )

View full solution →

Q 16[3 Mark Question Answer]3 Marks

A packet is dropped from a stationary helicopter, hovering at a height ' $h$ ' from ground level, reaches ground in 12s. Calculate
1. value of $h$
2. final velocity of packet on reaching ground. (Take $g =9.8 ms 2$ )

View full solution →

Q 17[3 Mark Question Answer]3 Marks

A cyclist driving at $36 kmh ^{-1}$ stops his motion in 2 s , by the application of brakes. Calculate
1. retardation
2. distance covered during the application of brakes.

View full solution →

Q 18[5 Mark Question Answer]4 Marks

A spaceship is moving in space with a velocity of $50 kms ^7$. Its engine fires for 10 s , such that its velocity increases to $60 kms ^{-1}$. Calculate the total distance travelled by spaceship in $1 / 2$ minute, from the time of firing its engine

View full solution →

Q 19[5 Mark Question Answer]4 Marks

A motor car slows down from 72 kmh¹ to 36 kmh over at distance of 25 m. If the brakes are applied with the same force calculate
1. total time in which car comes to rest
2. distance travelled by it.

View full solution →

Q 20[5 Mark Question Answer]4 Marks

A motor bike running at $90 kmh ^{-1}$, is slowed down to $54 kmh ^{-1}$ by the application of brakes, over a distance of 40 m . If the brakes are applied with the same force, calculate
1. total time in which bike comes to rest
2. total distance travelled by bike.

View full solution →

Q 21[5 Mark Question Answer]4 Marks

A motor bike running at $90 kmh ^{-1}$ is slowed down to $18 kmh ^{-1}$ in 2.5 s . Calculate
1. acceleration
2. distance covered during slow down.

View full solution →

Q 22[5 Mark Question Answer]4 Marks

Diagram given below shows velocity - time graphs of car P and Q, starting from same place and in same direction. Calculate:
1. Acceleration of car P.
2. Acceleration of car Q between 2 s5 s.
3. At what time intervals both cars have same velocity?
4. Which car is ahead after 10 s and by how much?

View full solution →

Motion in One Dimension question types

Motion in One Dimension questions

Generate a Motion in One Dimension paper free

Motion in One Dimension PHYSICS - Motion in One Dimension

Motion in One Dimension question types

Motion in One Dimension questions

Generate a Motion in One Dimension paper free