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प्रश्न
Define velocity.
उत्तर
Velocity is defined as the ratio of the displacement vector to the corresponding time interval. It is a vector quantity or it can also be defined as the rate of change of displacement.
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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 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 |
The following graphs represent the velocity-time graph. Identify what kind of motion a particle undergoes in each graph.
| (a) |  |
| (b) |  |
| (c) |  |
| (d) |  |
