Question

al. A car starts from rest and and has
a uniform acceleration of 2 m/s2. find
the speed of the caur after ? 5S.​

Answer 1

Question :-

A car starts from rest and has a uniform acceleration of 2 m/s² . Find the speed of the car after 5 seconds ?

Answer :-

Given :-

A car starts from rest and has a uniform acceleration of 2 m/s² .

Required to find :-

• Speed of the car after 5 seconds

Equation used :-

• v = u + at

Concept used :-

• Speed is a scalar quantity

• Speed has only magnitude but not direction

• Velocity can become speed in some cases but speed can't become as velocity

Solution :-

Given information :-

A car starts from rest and has a uniform acceleration of 2 m/s²

we need to find the speed of the car after 5 seconds !

In order to find the speed of the car we need to use the equations of motion .

Here,

The required Equation is ;

v = u + at

here,

• v = final velocity

• u = initial velocity

• a = acceleration

• t = time taken

From the given information we can conclude that ;

Initial velocity of the car = 0 m/s

Since, the car is at rest

Similarly,

acceleration = 2 m/s²

Time = 5 seconds

Hence,

$\rightarrow{\text{ using the mentioned equation }}$

$\rightarrow{\tt{ v = 0 \; m/s + 2 \; m/{s}^{2} \times 5 \; s }}$

$\rightarrow{\tt{ v = 0 \; m/s + 2 \; m/s \times 5 }}$

$\rightarrow{\tt{ v = 0\;m/s + 10 \; m/s }}$

$\rightarrow{\tt{ v = 10\; m/s }}$

Therefore,

Speed of the car after 5 seconds = 10 m/s

Answer 2

Answer:

5 m

Explanation:

If speed is 2 m/2 sec it means speed is 1 m/sec.

In 5 second it will cover 5 m.

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