Advertisements
Advertisements
प्रश्न
Every object moves with a constant speed.
पर्याय
True
False
उत्तर
This statement is False.
Explanation:
Objects do not always move with a constant speed; their speed can change due to acceleration or deceleration.
APPEARS IN
संबंधित प्रश्न
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.
The relation S= v x t can easily be used to find the tota l distance covered by a body moving with non -uni form speed. (Yes/ no)
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?
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.
For a body moving along a circular path, show that:
Linear speed = Angular velocity X radius of the circle
Distances between two cities are measured in kilometres.
Usain Bolt crossed 100 meters in ______ seconds and made a world record.
A bus travels, a distance of 20 km from Chennai central to the airport in 45 minutes. What is the average speed?
Distinguish between Speed and velocity.
