Advertisements
Advertisements
प्रश्न
A spaceship travels 36,000 km in one hour. Express its speed in km/s.
Advertisements
उत्तर
Speed of spaceship = 36,000 km/h
= `(36000 km)/(60 xx 60s)`
= 10 km/s
APPEARS IN
संबंधित प्रश्न
Suppose the two photographs, shown in Figure 1 and Figure 2, had been taken at an interval of 10 seconds. If a distance of 100 metres is shown by 1 cm in these photographs, calculate the speed of the fastest car.
Figure 1 Vehicles moving in the same direction on a road
Figure 2 Position of vehicles shown in Figure 1 after some time
When is instantaneous speed the same as the average speed?
Convert 20 m/s into km/hr.
A boy covers half of his journey with a uniform speed of u and the other half with a uniform speed of v. What is the average speed for the whole journey?
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.
A body covers half the distance with the speed A and the other half with speed B. What will be the average speed for the whole journey?
Distances between two cities are measured in kilometres.
The SI unit of speed is a kilometer.
Define speed Mention its formula and unit.
A bus travels, a distance of 20 km from Chennai central to the airport in 45 minutes. What is the average speed?
