Question 1 :
A simple pendulum takes 32 s to complete 20 oscillations. What is the time period of the pendulum?
Question 3 :
A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. The total distance covered by the car is
Question 4 :
Motion of a train on a straight bridge is classified as:
Question 5 :
The odometer of a car reads 57321.0 km when the clock shows the time 08:30 a.m. At 08:50 a.m., the odometer reading has changed to 57336.0 km. What is the distance covered by the car during this time?
Question 6 :
Which of the following distance-time graph shows a truck moving at the speed which is not constant ?
Question 7 :
Classify the following as motion along a straight line, circular or oscillatory motion : Motion of your hands while running.
Question 8 :
The distance between two stations is 240 km. A train takes 4 hours to cover this distnace. Calculate the speed of the train.
Question 9 :
Which of the following distance-time graphs shows a truck moving with speed which is not constant?
Question 10 :
Boojho wants to know whether there is any device that measures the speed. Can you help him ?
Question 11 :
Boojho is wondering how many hours are there are in a year. Can you help him ?
Question 13 :
Which of the following cannot be used for measurement of time?
Question 14 :
State whether the statement is correct or not : The basic unit of time is second.
Question 15 :
The correct symbol to represent the speed of an object is
Question 16 :
If Boojho covers a certain distance in one hour and Paheli covers the same distance in two hours, who travels in a higher speed?
Question 17 :
The odometer of a car reads 57, 321.0 km when the clock shows the time 08:30 AM. What is the distance moved by the car, if at 08 : 50 AM, the odometer reading has changed to 57, 336.0 km ?
Question 18 :
Motion of the hammer of an electric bell is classified as:
Question 19 :
State true or false: Every object moves with a constant speed.
Question 20 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cb9af59b460d7261ec69.png ' />
In the above figure, a simple pendulum is oscillating between two points A and B. Is the motion of the bob uniform or non-uniform?