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प्रश्न
One of the following is not a vector quantity. This one is :
विकल्प
displacement
speed
acceleration
velocity
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उत्तर
Speed
Vector quantities have magnitude as well as direction, and they obey the laws of vector addition.
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संबंधित प्रश्न
Name the physical quantity which gives us an idea of how slow or fast a body is moving.
Under which condition is the magnitude of average velocity equal to average speed ?
Arrange the following speed in increasing order (keeping the least speed first
A scooter moving with a speed of 30 km/h.
A car travels 100 km at a speed of 60 km/h and returns with a speed of 40 km/h. Calculate the average speed for the whole journey.
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)`.
A car is moving on a straight road with uniform acceleration. The speed of the car varies with time as follows :
Time (s) : 0 2 4 6 8 10
Speed (m/s) : 4 8 12 16 20 24
Draw the speed-time graph by choosing a convenient scale. From this graph :
(1) Calculate the acceleration of the car.
(2) Calculate the distance travelled by the car in 10 seconds.
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.
Which of the following figures (Fig. 8.3) represents uniform motion of a moving object correctly?
