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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.
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 ?
Which of the following could not be a unit of speed?
Express the following in m s-1.
18 km min-1
Figure shows the displacement of a body at different times .
Calculate the velocity of the body as it moves for time interval :
(i) 0 to 5 s,
(ii) 5 s to 7 s
(iii) 7 s to 9 s.
The velocity-time graph of a moving body is given below in Figure
Displacement in each part AB, BC and CD.
The velocity-time graph of a moving body is given below in Figure
The acceleration in parts AB, BC and CD.
A body moves from rest with uniform acceleration and travels 270 m in 3 s. Find the velocity of the body at 10 s after the start.
Define variable velocity and give one example.
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.
