Contoh Soal Gerak Lurus Berubah Beraturan (GLBB) - (Pembahasan 2 contoh praktis)

Summary

This video presents practical examples of uniformly accelerated linear motion (GLBB), enhancing viewers' understanding of the topic. It begins with an overview of essential formulas, including those for acceleration, distance, and final velocity. Through illustrative problems, such as calculating a car's acceleration and distance traveled during speed changes, the video effectively demonstrates the application of these formulas. A second example further explains how to determine distance when an object decelerates. The content is designed to engage viewers and improve their grasp of GLBB concepts, encouraging them to like the video if they find it beneficial.

Takeaways

• 😀 The video focuses on practical examples of uniformly accelerated rectilinear motion (GLBB).
• 😀 GLBB refers to motion in a straight line where an object experiences uniform changes in velocity.
• 😀 Important formulas for GLBB include those for calculating acceleration, distance traveled, and final velocity.
• 😀 Acceleration (a) is expressed in meters per second squared (m/s²).
• 😀 The formula for distance traveled (S) during GLBB incorporates initial velocity, time, and acceleration.
• 😀 The example problem involves a car that accelerates from 2 m/s to 4 m/s over 5 seconds.
• 😀 The calculated acceleration for the car is 0.4 m/s².
• 😀 The distance traveled during the acceleration phase is determined to be 15 meters.
• 😀 Another example illustrates an object slowing down from 4 m/s to a stop in 4 seconds, covering a distance of 8 meters.
• 😀 Viewers are encouraged to like the video if they find it helpful.

Q & A

What is the main topic of the video?

The video focuses on examples of uniformly accelerated linear motion, also known as GLBB.

What does GLBB stand for?

GLBB stands for 'Gerak Lurus Berubah Beraturan,' which translates to uniformly accelerated linear motion.

What are the key formulas related to GLBB mentioned in the video?

The key formulas include those for calculating acceleration, distance traveled during GLBB, and final velocity after GLBB.

How is acceleration calculated in GLBB?

Acceleration (a) is calculated using the formula a = (Vt - V0) / t, where Vt is the final velocity, V0 is the initial velocity, and t is the time taken.

What example is given to illustrate the concepts of GLBB?

An example of a car moving in a straight line with an initial speed of 2 m/s, which accelerates to 4 m/s over 5 seconds, is provided.

How is the distance traveled by the car calculated?

Distance (S) can be calculated using the formula S = V0 * t + 1/2 * a * t^2, or by directly using the formula S = 2 * t + Vt * t.

What was the distance traveled by the car in the example?

The car traveled a distance of 15 meters during the change in velocity.

What does the video suggest about calculating distance without finding acceleration?

The video suggests that distance can be calculated directly by using the initial velocity and the final velocity over the time period without calculating acceleration.

What is another example of GLBB provided in the video?

The video describes an object initially moving at 4 m/s that decelerates uniformly to a stop over 4 seconds.

What was the distance covered by the object that decelerated to a stop?

The object covered a distance of 8 meters from the moment it started decelerating until it stopped.