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प्रश्न
What do the following measure in a car ?
(a) Speedometer (b) Odometer
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उत्तर
(a) Speedometer of a car is used to measure the instantaneous speed of the car.
(b) Odometer of a car is used to record and measure the overall distance travelled by the car.
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संबंधित प्रश्न
In addition to speed, what else should we know to predict the position of a moving body ?
What is the SI unit of retardation ?
A train starting from Railway Station attains a speed of 21 m/s in one minute. Find its acceleration.
Give one example of a motion where an object does not change its speed but its direction of motion changes continuously.
The tip of seconds’ hand of a dock takes 60 seconds to move once on the circular dial of the clock. If the radius of the dial of the clock be 10.5 cm, calculate the speed of the tip of the seconds’ hand of the clock. `("Given" π= 22/7)`.
Which of the following can sometimes be 'zero' for a moving body?
(i) average velocity
(ii) distance travelled
(iii) average speed
(iv) displacement
Which of the following could not be a unit of speed?
Which of the quantity-velocity or acceleration-determines the direction of motion?
A speeding car changes its velocity from 108 kmh−1 to 36 kmh−1 in 4 s. Calculate its deceleration in
- ms−2
- kmh−2.
Give two examples of uniform circular motion from your daily life.
