- ✓Both A and B
- BOnly A
- COnly B
- DNeither A nor B
Answer: A.
View full solution →Question types
Motion and Time question types
110 questions across 9 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
110
Questions
9
Question groups
5
Question types
01
MCQ (1 Marks)
26 Q→02Assertion (A) & Reason (B) MCQ
6 Q→03True False[1 Marks ]
10 Q→04Fill In The Blanks With Correct Alternative.[1 Marks Each]
11 Q→051 Marks Question
25 Q→062 Marks Questions
12 Q→073 Marks Question
12 Q→08Match the Following.
2 Q→095 Marks Questions
6 Q→Sample Questions
Motion and Time questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Boojho walks to his school which is at a distance of 3 km from his home in 30 min. On reaching, he finds that the school is closed and comes back by a bicycle with his friend and reaches home in 20 min. His average speed in $km / h$ is
- A8.3
- ✓7.2
- C5
- D3.6
Answer: B.
View full solution →The correct symbol to represent the speed of an object is
- ✓5 $m / s$
- B5 mp
- C$5 m / s ^{-1}$
- D$5 s / m$
Answer: A.
View full solution →The diagram shows a pendulum in periodic motion. The time period of a pendulum is the time taken by the bob to make one complete oscillation.
What would be the movement of the bob for one complete oscillation of the pendulum?
What would be the movement of the bob for one complete oscillation of the pendulum?
- AC to B
- BC to A
- CB to C to A
- ✓B to C to B
Answer: D.
View full solution →Two clocks A and B are shown in figure. Clock A has an hour and a minute hand whereas clock B has an hour hand, minute hand as well as a second hand. Which of the following statement is correct for these clocks?
- AA time interval of 30s can be measured by clock A
- BA time interval of 30s cannot be measured by clock B
- ✓Time interval of 5 min can be measured by both A and B
- DTime interval of 4 min 10s can be measured by clock A
Answer: C.
View full solution →Assertion (A) The distance covered by an object in unit time is called its speed.
Reason (R) Faster vehicles take less time to cover a certain distance as compare to slower vehicle.
Reason (R) Faster vehicles take less time to cover a certain distance as compare to slower vehicle.
- ABoth A and R are true and R is the correct explanation of A
- ✓Both A and R are true but R is not the correct explanation of A.
- CA is true but R is false.
- DA is false but R is true.
Answer: B.
View full solution →Assertion (A) The time taken by a pendulum to complete one oscillation is called its time period.
Reason (R) Time period of a simple pendulum does not depend upon the length of pendulum.
Reason (R) Time period of a simple pendulum does not depend upon the length of pendulum.
- ABoth A and R are true and R is the correct explanation of A
- BBoth A and R are true but R is not the correct explanation of A.
- ✓A is true but R is false.
- DA is false but R is true.
Answer: C.
View full solution →Assertion (A) Speedometer is a device used to measure the speed of vehicle.
Reason (R) Speed is the total time taken divided by total distance covered by an object.
Reason (R) Speed is the total time taken divided by total distance covered by an object.
- ABoth A and R are true and R is the correct explanation of A
- BBoth A and R are true but R is not the correct explanation of A.
- ✓A is true but R is false
- DA is false but R is true.
Answer: C.
View full solution →Assertion (A) A simple pendulum is an example of non-periodic motion.
Reason (R) A simple pendulum does to and fro motion which is known as oscillatory motion.
Reason (R) A simple pendulum does to and fro motion which is known as oscillatory motion.
- ABoth A and R are true and R is the correct explanation of A
- BBoth A and R are true but R is not the correct explanation of A.
- CA is true but R is false
- ✓A is false but R is true.
Answer: D.
View full solution →Assertion (A) Speed of a vehicle in traffic jam is uniform.
Reason (R) When an object moves with constant speed, then its speed is uniform.
Reason (R) When an object moves with constant speed, then its speed is uniform.
- ABoth A and R are true and R is the correct explanation of A
- BBoth A and R are true but R is not the correct explanation of A.
- CA is true but R is false
- ✓A is false but R is true.
Answer: D.
View full solution →A kind of graph which shows the percentage composition of something in the form of slices of a circle is known as pie chart.
Speedometer is used to measure the distance travelled by an object.
The basic unit of speed is km/s.
Periodic events are used for the measurement of time.
The smallest time interval that can be measured with commonly available clocks and watches is one second.
__________ is the device used to measure the distance of a vehicle.
To and fro motion of pendulum is an example of __________ motion.
When the distance of an object remains constant from a fixed point during its motion, then its motion is __________ .
The distance-time graph for the motion of an object moving with a constant speed is a __________.
Motion of objects can be represented in the pictorial form by their __________ graph.
A spaceship travels 36000 km in one hour. Express its speed in $km / s$.
View full solution →If Boojho covers a certain distance in one hour and Paheli covers the same distance in two hours, who travels with a higher speed?
Paheli wondered how time was measured when pendulum clocks were not available?
Estimate that how many hours are there in a year?
Determine the number of seconds in a day.
Show the shape of the distance-time graph for the motion in the following cases
(a) A car moving with a constant speed.
(b) A car parked on a road side.
(a) A car moving with a constant speed.
(b) A car parked on a road side.
While going for a school picnic, Paheli decided to note the reading on the odometer of the bus after every 30 min till the end of the journey. Later on she recorded her readings in table.
Odometer reading at different times of the journey
(i) Can you tell how far was the picnic spot from the school?
(ii) Can you calculate the speed of the bus?
(iii) Looking at the table, Boojho asked Paheli whether she can tell how far they would have travelled till 9:45 AM.
Odometer reading at different times of the journey
| Time (AM) | Odometer readings | Distance from the starting point |
| 8:00 | 36540 km | 0 km |
| 8:30 | 36560 km | 20 km |
| 9:00 | 36580 km | 40 km |
| 9:30 | 36600 km | 60 km |
| 10:00 | 36620 km | 80 km |
(ii) Can you calculate the speed of the bus?
(iii) Looking at the table, Boojho asked Paheli whether she can tell how far they would have travelled till 9:45 AM.
(a) Name the watch that have an electric circuit with one or more cells.
(b) Name the ancient time measuring device.
(b) Name the ancient time measuring device.
Write the use of odometer in the vehicle.
A car travelling at a speed of 60 km/h takes 20 min to reach its destination. What distance has the car covered?
Complete the data of the table given below with the help of the distance-time graph given in figure.
Distance (m) | 0 | 4 | ? | 12 | ? | 20 |
Time (s) | 0 | 2 | 4 | ? | 8 | 10 |
Plot a distance-time graph of the tip of the second hand of a clock by selecting 4 points on X-axis and Y-axis, respectively. The circumference of the circle traced by the second hand is 64 cm.
Starting from A, Paheli moves along a rectangular path ABCDas shown in figure. She takes 2 min to travel each side. Plot a distance-time graph and explain whether the motion is uniform or non-uniform.
The average age of children of class VII is 12 years and 3 months. Express his age in second.
| Column I | Column II |
| (a) Speed | (i) Speed $\times$ Time |
| (b) Wheel of cycle | (ii) Nanosecond |
| (c) Time | (iii) $km / h$ |
| (d) Distance | (iv) Circular motion |
| Column I | Column II |
| (a) Years | (i) Rotation period of the earth on its axis |
| (b) Hour | (ii) Time to complete 100 m race |
| (c) Days | (iii) Gestation period in humans |
| (d) Second | (iv) Age of a person |
| (v) Train reaches from one city to other |
Given below in a figure is the distance-time graph of the motion of an object.
(i) What will be the position of the object at 20 s?
(ii) What will be the distance travelled by the object in 12 s?
(iii) What is the average speed of the object?
(i) What will be the position of the object at 20 s?
(ii) What will be the distance travelled by the object in 12 s?
(iii) What is the average speed of the object?
Boojho goes to the football ground to play football. The distance-time graph of his journey from his home to the ground is given as figure.
(i) What does the graph between points B and C indicate about the motion of Boojho?
(ii) is the motion between 0 to 4 min uniform or non-uniform?
(iii) What is his speed between 8 to 12 min of his journey?
(i) What does the graph between points B and C indicate about the motion of Boojho?
(ii) is the motion between 0 to 4 min uniform or non-uniform?
(iii) What is his speed between 8 to 12 min of his journey?
Distance between Bholu's and Golu's house is 9 km. Bholu has to attend Golu's birthday party at 7 o' clock. He started his journey from his home at 6 o' clock on his bicycle and covered a distance of 6 km in 40 min. At that point, he met Chintu and he spoke to him for 5 min and reached Golu's birthday party at 7 o' clock. With what speed, did he cover the second part of the journey? Calculate his average speed for the entire Journey.
The distances travelled by a car at various time intervals are given as follow
(a) Draw the distance-time graph for the car.
(b) What conclusion do you get from this graph about the nature of motion of the car?
| Distance (m) | 0 | 5 | 10 | 15 | 20 | 25 |
| Time (s) | 0 | 2 | 4 | 6 | 8 | 10 |
(b) What conclusion do you get from this graph about the nature of motion of the car?
Explain by giving example that how can we choose a suitable scale?
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