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प्रश्न
A car moving on a straight path covers a distance of 1 km due east in 100 s. What is the speed of the car?
उत्तर
Speed of the car = Distance/time taken
= `(1 "km")/(100 "s") = "1000 m"/"100 s" = "10 m/s"`
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संबंधित प्रश्न
Joseph jogs from one end A to the other end B of a straight 300 m road in 2 minutes 30 seconds and then turns around and jogs 100 m back to point C in another 1 minute. What are Joseph’s average speeds and velocities in jogging?
- from A to B and
- from A to C?
Fill in the following blank with suitable word:
The physical quantity which gives both, the speed and direction of motion of a body is called its……………
State whether speed is a scalar or a vector quantity. Give reason for your choice.
Write the formula to calculate the speed of a body moving along a circular path. Give the meaning of each symbol which occurs in it.
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.
Give one example of following motion :
Uniform velocity
Give one example of following motion :
Variable velocity
Define average velocity and give one example.
Distinguish between speed and velocity.
A motorcyclist drives from A to B with a uniform speed of 30 km h–1 and returns back with a speed of 20 km h–1. Find its average speed.
