Average Speed and Average Velocity
Trending Questions
Under what condition the average velocity of a body is equal to its instantaneous velocity?
What do you mean by average speed? State the S.I. unit of speed. [2 MARKS]
A boy is driving a car at a speed of 60 km/hr from his home to college. In the return journey, his speed was half of what it was in the ongoing journey. Calculate the total time of the entire journey. Given: Distance between college and home is 12 km. Also, find the average speed of the car for the entire journey. [5 MARKS]
- 100 kmph
- 200 kmph
- 300 kmph
- 400 kmph
- less distance in more time
- more distance in more time
- less distance in short time
- more distance in lesser time
- 0 m/s
- 1 m/s
- 4 m/s
- 0 km/h
- 20 km/h
- 32 km/h
- 64 km/h
A thunderclap is heard 5.5 sec after the lightning flash. The distance of the flash is
1780 m
1815 m
300 m
3560 m
The following graph represents the motion of an object. The velocity of the object is
1
0
- changing
- increasing
What is the walker's average speed between B and D ?
- 16 m/s
- 2 m/s
- 1 m/s
- 8 m/s
A monkey jumps from ground into the air. At the maximum height that it attains, what is true about its instantaneous velocity and acceleration?
Both velocity and acceleration are non-zero
His velocity is non-zero but acceleration is zero
His velocity and acceleration both are zero
His velocity is zero but acceleration is non-zero
An insect moves along the sides of a wall of dimensions 12 m × 5 m starting from one corner and reaches the diagonally opposite corner. If the insect takes 2 seconds for its motion, then find the ratio of average speed to the average velocity of insect.
13 : 5
17 : 12
17 : 13
12 : 5
Abirami has covered some distance with a speed of 20 km/hr in 5 hrs. And then some more distance in another 5 hrs, with a speed of 30 km/hr. Find the average speed for her entire journey.
30 km/hr
50 km/hr
25 km/hr
10 km/hr
- 30 s
- 50 s
- 20 s
- Time/Length
- Length/time
- Time/Mass
Who ran the fastest in between the 2nd and the 4th minute?
- Pooja
- Mayur
- Hemant
- Both Pooja and Hemant
It was a rainy day in Bangalore. Rohit was sitting beside the window when he saw a lightning. He started his stopwatch. He found that after 22 seconds of lightning its roaring was heard. Calculate the height of the clouds which caused this lightning. Given,
Speed of light = 3x108ms and Speed of sound = 340ms.
10km
8.5km
7.5km
5km
- 10 km
- 8.5 km
- 7.5 km
- 5 km
A monkey jumps from ground into the air. At the maximum heigtht that it attains, what is true about its instantaneous velocity and acceleration?
Both velocity and acceleration are non-zero
His velocity is zero but acceleration is non-zero
His velocity is non-zero but acceleration is zero
His velocity and acceleration both are zero
It was a rainy day in Bangalore. Rohit was sitting beside the window when he saw a lightning. He started his stopwatch. He found that after 22 seconds of lightning its roaring was heard. Calculate the distance of the clouds which caused this lightning. Given,
Speed of light = 3 x 108 ms and Speed of sound = 340ms.
8.5km
7.5km
10km
5km
It was a rainy day in Bangalore. Rohit was sitting beside the window when he saw a lightning. He started his stopwatch. He found that after 22 seconds of lightning its roaring was heard. Calculate the height of the clouds (approximately) which caused this lightning. Given,
Speed of light = 3×108ms and Speed of sound = 340ms.
10km
8.5km
7.5km
5km
- zero
- non zero
- zero
- non zero
Bob has covered some distance with a speed of 50 km/hr in 2 hrs. And then some more distance in another 2 hrs, with a speed of 40 km/hr. Find the average speed for his entire journey.
90 km/hr
45 km/hr
90 m/s
45 m/s
- 100 kmph
- 200 kmph
- 300 kmph
- 400 kmph
A body goes from C to D with a velocity of 20 m/s and comes back from D to C with a velocity of 30 m/s. The average velocity of the body during the whole journey is:
Zero
26 m/s
25 m/s
24 m/s