11 Questions
What physical quantity does the distance equation describe?
Distance
Which equation describes the final velocity of an object under uniform acceleration?
v = u2 + 2as
What is the key characteristic of uniform accelerated motion?
Constant acceleration
Which type of motion is exemplified by objects like free-falling objects and bicycles braking?
Uniform accelerated motion
How are the initial and final velocities related in uniform accelerated motion?
Final velocity changes at a constant rate
What type of motion does a free-falling object experience under the force of gravity?
Uniform accelerated motion
In uniform accelerated motion, how do the velocity graphs differ between uniform and non-uniform acceleration?
Uniform acceleration graphs are straight lines, while non-uniform acceleration graphs are curved.
What happens to the speed of an object in uniform accelerated motion as time progresses?
It increases at a constant rate.
Which equation describes the velocity of an object in uniform acceleration involving initial velocity, acceleration, and time taken?
$v = u + at$
Which situation would not be an example of uniform accelerated motion?
A car gradually slowing down at a traffic light
What differentiates the motion of an object in uniform accelerated motion from moving at a constant velocity?
In uniform accelerated motion, the velocity changes at a constant rate.
Study Notes
Uniform Accelerated Motion
Uniform accelerated motion refers to the motion of an object in a straight line with a constant acceleration and zero difference between initial and final velocities. In this type of motion, the velocity of an object changes at a constant rate, but it does not mean that the object moves at a constant velocity. Instead, uniform accelerated motion involves an object moving with an increasing velocity as time progresses.
Examples of uniform accelerated motion include:
-
Free-falling object under the force of gravity: When an object is dropped from a height, it experiences a constant acceleration due to gravity, which makes the motion uniformly accelerated.
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Ball rolling down a frictionless slope: When a ball rolls down a sloped surface, it experiences a constant acceleration due to the force of gravity and the slope.
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Bicycle rolling downhill when the brakes are applied: When a bicycle rolls downhill, the brakes are applied to slow down the bicycle, which causes a constant acceleration and makes the motion uniformly accelerated.
The uniform acceleration graphs for uniformly accelerated motion are straight lines, while the non-uniform acceleration graphs are curved.
The motion of an object in uniform acceleration can be described by the following equations:
-
Velocity equation:
v = u + at, wherevis the final velocity,uis the initial velocity,ais the acceleration, andtis the time taken by the object. -
Distance equation:
s = ut + 1/2at2, wheresis the distance,uis the initial velocity,ais the acceleration, andtis the time taken by the object. -
Final velocity equation:
v2 = u2 + 2as, wherev2is the final velocity,u2is the initial velocity,ais the acceleration, andsis the distance.
These equations are used to describe the motion of an object under uniform acceleration.
In conclusion, uniform accelerated motion is a type of motion where an object moves in a straight line with a constant acceleration and zero difference between initial and final velocities. It is characterized by the object's velocity changing at a constant rate, and examples include free-falling objects, balls rolling down slopes, and bicycles braking. The motion can be described using the velocity, distance, and final velocity equations.
Learn about the concept of uniform accelerated motion, where an object moves in a straight line with constant acceleration. Explore examples and equations related to uniformly accelerated motion, including velocity, distance, and final velocity equations.
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