Question 1 :
A signal from a spaceship reached the ground station in five minutes. What was the distance of the spaceship from the ground station? The signal travels at the speed of light, that is, $3\times10^8 $m per second.
Question 2 :
An electron moving with a velocity of $5 × 10^4$ $ms^{-1}$ enters into a uniform electric field and acquires a uniform acceleration of 104 $ms^{–2}$ in the direction of its initial motion. How much distance the electron would cover in this time?
Question 3 :
The odometer of a car reads 2000 km at the start of a trip and 2400 km at the end of the trip. If the trip took 8 h, What is the average speed of the car in $ ms^{–1}$?
Question 4 :
A racing car has a uniform acceleration of 4 $m/s^2$. What distance will it cover in 10 s after start?
Question 5 :
Velocity is the speed of an object moving in a definite direction. TRUE or FALSE ?
Question 6 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d2eef59b460d7261f65c.jpg' />
The above figure shows the distance time graph of three objects A,B and C. How far has B travelled by the time it passes C?
Question 7 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d294f59b460d7261f5e2.JPG' />
Using above data, draw time-displacement graph for a moving object and use the graph to find average velocity for first 4s.
Question 9 :
Joseph jogs from one end A to the other end B of a straight 300 m road in 2 minutes 30 seconds and then turns around and jogs 100 m back to point C in another 1 minute. What is Joseph's average speed from A to B?
Question 10 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d2cef59b460d7261f632.png' />
The distance-time graph of three objects A,B and C is shown above,According to this graph,How far has C travelled when B passes A?
Question 11 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d2cff59b460d7261f633.png' />
The distance-time graph of three objects A,B and C is shown above,According to this graph,How far has B travelled by the time it passes C?
Question 12 :
A train starting from a railway station and moving with uniform acceleration attains a speed of 40 km/h in 10 minutes. Find its acceleration.
Question 13 :
A baby is not able to tell her/his caretakers that she/he is sick. What would help us to find out that the baby is sick?
Question 14 :
Why are we normally advised to take bland and nourishing food when we are sick?
Question 16 :
A baby is not able to tell her/his caretakers that she/he is sick. What would help us to find out what is the sickness?
Question 17 :
Under which of the following conditions is a person most likely to fall sick?
Question 19 :
Diseases where microbes are the immediate causes are called non-infectious diseases. TRUE or FALSE?
Question 20 :
The musculoskeletal system, which is made up of bones and muscles, holds the body parts together and helps the body move. TRUE or FALSE?
Question 21 :
If you get jaundice, do you think the long-term effects on your health are likely to be most unpleasant?
Question 23 :
Any disease that causes poor functioning of some part of the body will affect our health. TRUE or FALSE?
Question 24 :
How would a person develop those diseases that don’t spread by contact with a sick person?
