Advertisements
Advertisements
Question
A spaceship travels 36,000 km in one hour. Express its speed in km/s.
Advertisements
Solution
Speed of spaceship = 36,000 km/h
= `(36000 km)/(60 xx 60s)`
= 10 km/s
APPEARS IN
RELATED QUESTIONS
Which is greater?
(i) 60 km/hr
(ii) 15 m/s
Convert 20 m/s into km/hr.
Arrange the following speeds in the increasing order:
(i) A bicycle moving with a speed of 36 km/h.
(ii) A car moving with a speed of 2 km/min.
(iii) An athlete running with a speed of 7 m/s.
Is the average speed during different time intervals for a uniform motion the same or different?
The average time taken by a normal person to react to an emergency is one fifteenth of a second and is called the 'reaction time'. If a bus is moving with a velocity of 60 km/h and its driver sees a child running across the road, how much distance would the bus had moved before he could press the brakes? The reaction time of the people increases when they are intoxicated. How much distance had the bus moved if the reaction time of the driver were 1/2 s under the influence of alcohol?
In figure the position of a body times is shown . Calculate the speed of the body as it moves from 0 to A, A to B, B to C and i ts average speed .
Speed is always positive or zero but never be ______.
A bus travels 54 km in 90 minutes. The speed of the bus is ______.
The correct symbol to represent the speed of an object is ______.
Why did the actual speed differ from the average, speed?
