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FAQs on Textbook: Motion in one dimension - Technical Science for Grade 10

1. What is motion in one dimension?
Ans. Motion in one dimension refers to the movement of an object along a straight path. This type of motion can be described using parameters such as displacement, velocity, and acceleration, which are measured in a single direction.
2. How do you calculate average velocity in one-dimensional motion?
Ans. Average velocity is calculated by taking the total displacement of the object and dividing it by the total time taken. The formula is: Average Velocity = Total Displacement / Total Time. It gives an idea of how fast the object is moving in a specific direction.
3. What is the difference between speed and velocity?
Ans. Speed is a scalar quantity that refers to how fast an object is moving, regardless of direction. Velocity, on the other hand, is a vector quantity that includes both the speed of the object and the direction in which it is moving. For example, a car moving at 60 km/h north has a velocity, while the same car moving at 60 km/h has just a speed.
4. What is acceleration, and how is it calculated in one-dimensional motion?
Ans. Acceleration is the rate of change of velocity of an object over time. It is calculated using the formula: Acceleration = (Final Velocity - Initial Velocity) / Time Taken. A positive acceleration indicates an increase in speed, while a negative acceleration (deceleration) indicates a decrease in speed.
5. What are the equations of motion for uniformly accelerated motion?
Ans. The equations of motion for uniformly accelerated motion are three key formulas that relate displacement, initial velocity, final velocity, acceleration, and time. They are: 1. v = u + at (where v is final velocity, u is initial velocity, a is acceleration, and t is time) 2. s = ut + (1/2)at² (where s is displacement) 3. v² = u² + 2as. These equations help predict the future position and velocity of an object under constant acceleration.
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