Say some questions about Motion and time
Answers
Explanation:
Question 1.
Give the basic unit of speed.
Answer:
Metre/second is the basic unit of speed.
Question 2.
Mention which is the most common thing in almost all the clocks.
Answer:
The most common thing in almost all the clocks is that all of them shows periodic motion.
Question 3.
Paheli and Boojho have to cover different distances to reach their school but they take the same time to reach the school. What can you say about their speed? [NCERT Exemplar; HOTS]
Answer:
They do not have equal speed because they cover unequal distance in equal intervals of time. One of them has higher speed whom has to cover larger distance with respect to other.
Question 4.
If Boojho covers a certain distance in one hour and Paheli covers the same distance in two hours, who travels with a higher speed? [NCERT Exemplar; HOTS]
Answer:
Boojho travels with a higher speed as he has covered same distance in lesser time with respect to Paheli.
Question 5.
A simple pendulum is oscillating between two points A and B as shown in figure. Is the motion of the bob uniform or non-uniform?
Motion and Time Class 7 Extra Questions Science Chapter 13 1
Answer:
The motion of bob is non-uniform as it does not cover equal distance in equal intervals of time.