Advertisements
Advertisements
Question
Which is greater?
(i) 60 km/hr
(ii) 15 m/s
Solution
60 km/hr can be converted into m/s to compare with 15m/s.
60 km/hr = (60 X 1000)/3600 = 16.66 m/s. so speed 60 km/hr is greater.
APPEARS IN
RELATED QUESTIONS
Define Speed.
Do speed and average speed of a body have the same meaning?
Which is greater?
(i) 36 km/hr
(ii) 8.5 m/s
Can the speed of a body be negative?
Can a body have negative speed?
A girl had designed a clap switch for a science exhibition that enabled her to switch on or off an alarm just with clapping of hands. While testing her device in a hall, she noticed that once the alarm has sounded it followed with another one due to echo of the clap, that is, the sound reflected by the walls. She recorded the two soundings of alarm with her tape recorder and found out that time difference in between them is 0.1 s. If the distance of the walls be 15 m, calculate the speed of sound.
Suppose a boy is enjoying a ride on a merry go round which is moving with a constant speed of 10 m/s. It implies that the boy is
Speed is a ______ quantity whereas velocity is a ______ quantity.
The correct symbol to represent the speed of an object is
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?