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प्रश्न
The following graphs represent the velocity-time graph. Identify what kind of motion a particle undergoes in each graph.
| (a) |  |
| (b) |  |
| (c) |  |
| (d) |  |
उत्तर
(a) At all the points, the slope of the graph is constant.
∴ `veca` = constant
(b) No change in magnitude of the velocity with respect to time
∴ `vecv` = constant
(c) Slope of this graph is greater than graph (a) but constant
∴ `veca` = constant but greater than the graph (a)
(d) At each point-slope of the curve increases.
∴ `veca` is a variable and the object is in accelerated motion.
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संबंधित प्रश्न
An object is dropped in an unknown planet from a height of 50 m, it reaches the ground in 2 s. The acceleration due to gravity in this unknown planet is ______
Define velocity.
Define acceleration.
What is the difference between velocity and average velocity?
Define angular velocity.
Derive the expression for centripetal acceleration.
Calculate the average velocity of the particle whose position vector changes from `vecr_1 = 5hati + 6hatj` to `vecr_2 = 2hati + 3hatj` in a time 5 second.
The following table gives the range of a particle when thrown on different planets. All the particles are thrown at the same angle with the horizontal and with the same initial speed. Arrange the planets in ascending order according to their acceleration due to gravity, (g value).
| Planet | Range |
| Jupiter | 50 m |
| Earth | 75 m |
| Mars | 90 m |
| Mercury | 95m |
