
A cheetah runs $900\;m$ in $30\;s$. How fast is it going?
Answer
444.9k+ views
Hint: We know that speed is a physical quantity, which measures how fast or slow an object is moving. We also know that speed is defined as the change in position of an object with respect to its initial position and time.
Formula used:
$s=\dfrac{d}{t}$
Complete answer:
We know that speed is a scalar quantity, which gives the magnitude of the object which is in motion. Also speed is the total distance covered by an object within a duration of time. It is mathematically given as $s=\dfrac{d}{t}$, where, $s$ is the speed of the object due to a distance $d$ in time $t$. The SI unit of speed is generally given as kilometres per hour.
Here, it is given that cheetah covers a distance $d=900\;m$ at time $t=30s$.
Then the speed of the cheetah is given as $s=\dfrac{d}{t}$, then substituting the values, we get
$\implies s=\dfrac{900}{30}=30m/s$
Thus the cheetah runs at a speed of $30m/s$
Additional Information:
There are two types of speed generally, average speed and instantaneous speed. Here we are calculating the average speed as we are taking the given data to be the total distance covered in a total time. The instantaneous speed is the speed which is measured at some given instant during the motion.
Note:
Speed and velocity both measure how fast or slow an object moves. But speed is a scalar quantity that has only magnitude and no direction. While velocity is a vector quantity which has both magnitude and direction. Also, note that the SI unit of speed km/h can be converted into m/s and vice versa.
Formula used:
$s=\dfrac{d}{t}$
Complete answer:
We know that speed is a scalar quantity, which gives the magnitude of the object which is in motion. Also speed is the total distance covered by an object within a duration of time. It is mathematically given as $s=\dfrac{d}{t}$, where, $s$ is the speed of the object due to a distance $d$ in time $t$. The SI unit of speed is generally given as kilometres per hour.
Here, it is given that cheetah covers a distance $d=900\;m$ at time $t=30s$.
Then the speed of the cheetah is given as $s=\dfrac{d}{t}$, then substituting the values, we get
$\implies s=\dfrac{900}{30}=30m/s$
Thus the cheetah runs at a speed of $30m/s$
Additional Information:
There are two types of speed generally, average speed and instantaneous speed. Here we are calculating the average speed as we are taking the given data to be the total distance covered in a total time. The instantaneous speed is the speed which is measured at some given instant during the motion.
Note:
Speed and velocity both measure how fast or slow an object moves. But speed is a scalar quantity that has only magnitude and no direction. While velocity is a vector quantity which has both magnitude and direction. Also, note that the SI unit of speed km/h can be converted into m/s and vice versa.
Recently Updated Pages
What percentage of the area in India is covered by class 10 social science CBSE

The area of a 6m wide road outside a garden in all class 10 maths CBSE

What is the electric flux through a cube of side 1 class 10 physics CBSE

If one root of x2 x k 0 maybe the square of the other class 10 maths CBSE

The radius and height of a cylinder are in the ratio class 10 maths CBSE

An almirah is sold for 5400 Rs after allowing a discount class 10 maths CBSE

Trending doubts
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths

Why is there a time difference of about 5 hours between class 10 social science CBSE

Change the following sentences into negative and interrogative class 10 english CBSE

Write a letter to the principal requesting him to grant class 10 english CBSE

Explain the Treaty of Vienna of 1815 class 10 social science CBSE

Write an application to the principal requesting five class 10 english CBSE
