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प्रश्न
A car is moving along a straight road at a steady speed. It travels 150 m in 5 seconds:
How far does it travel in 6 seconds ?
उत्तर
We have to calculate the distance travelled in 6 s.
Distance = (Speed) (Time)
Distance travelled in one second :
= (30) (6) m
= 180 m
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संबंधित प्रश्न
What name is given to the speed in a specified direction ?
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In addition to speed, what else should we know to predict the position of a moving body ?
Under which condition is the magnitude of average velocity equal to average speed ?
When is a body said to be in motion?
Give an example of the motion of a body moving with a constant speed but with a variable velocity. Draw a diagram to represent such a motion.
A car is moving in a straight line with speed 18 km h-1. It is stopped in 5 s by applying the brakes. Find:
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- the retardation and
- the speed of car after 2 s of applying the brakes.
Define average velocity and give one example.
Distinguish between speed and velocity.
