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प्रश्न
Which of the quantity-velocity or acceleration-determines the direction of motion?
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उत्तर
Velocity determines the direction of motion.
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संबंधित प्रश्न
Arrange the following speed in increasing order (keeping the least speed first):
An athlete running with a speed of 10 m/s.
A train travels the first 15 km at a uniform speed of 30 km/h; the next 75 km at a uniform speed of 50 km/h; and the last 10 km at a uniform speed of 20 km/h. Calculate the average speed for the entire train journey.
The graph given alongside shows how the speed of a car changes with time:
(i) What is the initial speed of the car ?
(ii) What is the maximum speed attained by the car ?
(iii) Which part of the graph shows zero acceleration ?
(iv) Which part of the graph shows varying retardation ?
(v) Find the distance travelled in first 8 hours.
Which of the following could not be a unit of speed?
The diagram below shows the pattern of the oil on the road at a constant rate from a moving car. What information do you get from it about the motion of the car.
The speed of a car is 72 km h-1. Express it in m s-1.
Express the following in m s-1.
18 km min-1
Arrange the following speeds in increasing order.
10 m s-1, 1 km min-1 and 18 km h-1.
For the motion with uniform velocity , how is the distance travelled related to the time ?
Distinguish between speed and velocity.
