What are the differences between uniform and non-uniform motion? Solve for the speed of a truck that travels…

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What are the differences between uniform and non-uniform motion? Solve for the speed of a truck that travels 540 km in 4.5 hrs. How does a sand clock work?

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Here are the answers to your questions.

6. What is the difference between uniform and non-uniform motion?
In uniform motion, an object covers equal distances in equal intervals of time, meaning its speed remains constant. In non-uniform motion, an object covers unequal distances in equal intervals of time, meaning its speed changes (it accelerates or decelerates).

7. A truck travels 540 km, in 4.5 hrs. Find the speed of truck.

Identify the given values.
Distance ( $D$ ) = $540 \text{ km}$
Time ( $T$ ) = $4.5 \text{ hrs}$
Use the formula for speed.
$\text{Speed} = \frac{\text{Distance}}{\text{Time}}$
Substitute the values and calculate the speed.
$\text{Speed} = \frac{540 \text{ km}}{4.5 \text{ hrs}}$ $\text{Speed} = 120 \frac{\text{km}}{\text{hr}}$
The speed of the truck is $\boxed{\text{120 km/hr}}$ .

8. How does a sand clock work?
A sand clock, or hourglass, works by using gravity to measure time. It consists of two glass bulbs connected vertically by a narrow neck. Fine sand flows from the upper bulb to the lower bulb through this neck at a relatively constant rate, and the total amount of sand is calibrated to flow completely in a specific duration, such as one hour.

What are the differences between uniform and non-uniform motion? Solve for the speed of a truck that travels 540 km in 4.5 hrs. How does a sand clock work?

Step-by-step solution

Identify the given values.

Use the formula for speed.

Substitute the values and calculate the speed.

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