5. Define speed of a body.
VI. Long answer type questions.
1. Distinguish between uniform motion and non-uniform motion.
2. Shatabdi express takes 6 hours to travel from New Delhi to Lucknow, at a speed of
the distance between the two cities.
3. A pendulum takes 20 seconds to complete 10 oscillations. Find its time period,
4. Find the average speed of a car if it travels 300 km in 6 hours.
5. The table given below show the distance of a car with time
Answers
Answer:
Q ) define speed of body?
ANS ) Speed = Distance travelled/Time taken
The ratio of distance travelled and the time taken by a body can be zero but not negative.
Q ) Distinguish between uniform motion and non-uniform motion.
ANS ) 3)Uniform motion implies the movement of a body along a straight line with steady speed. Non-Uniform motion: 1) If an object covers unequal distance in equal interval of time then the motion is said to be Non-Uniform motion. 2) We can depect the Non-Uniform motion by Distance-time graph which shows a curved line.
Q ) Shatabdi express takes 6 hours to travel from New Delhi to Lucknow, at a speed of
the distance between the two cities.
ANS ) The distance between the two cities = 480 km.
Q ) A pendulum takes 20 seconds to complete 10 oscillations. Find its time period ?
ANS ) 2 seconds
Answer. When a simple pendulum makes 10 oscillations in 20 seconds, the time taken for each oscillation = 20/10 = 2 seconds. Hence, as the time period is calculated to be 2 seconds, the frequency of oscillation = 1/T = 1/ 2 = 0.5 Hertz..
Q ) Find the average speed of a car if it travels 300 km in 6 hours.
ANS ) 300km/6hr = 50kmph
Answer by John10(297) (Show Source): You can put this solution on YOUR website!
As the problem gave you the distance (d) and time (t), we use the relationship of distance, time, and speed (s):
s = d/t = 300/6 = 50 km/h
I recommend that you check the units to make sure your answer is correct.
Q ) The table given below show the distance of a car with time
ANS ) ANSWER
v=
dt
dx
=slope of displacement time graph
Slope for car 4 is minimum so its speed is also minimum.
Speed is defined as the distance travelled by a body per unit time. Its unit in SI is m/s.
4 ) 50km/h is the average speed of the if it's travel 300 km in 6 hours..
