Question

A car starts from rest and travels with a velocity of 60m/sec for 8 seconds. Find the acceleration of the

car.​

Answer 1

Explanation:

Clculate the acceleration:

V = u +at

20m/s = 0 + a*10s

a = 20m//10s

a = 2m/s²

From the data given , it is not possible to calculate the displacement , because no direction of motion is given

But it is possible to calculate the distance travelled

Distance = ut + ½ *a*t²

distance = 0 + ½ * 2m/s * 10²s

distance = 100m

Answer 2

GIVEN:

• Initial Velocity (u) of the car = 0
• Velocity (v) of the car = 60 m/sec
• Time taken(t) by the car = 8 seconds

TO FIND:

• What is the acceleration(a) of the car ?

SOLUTION:

We have given that, the initial Velocity(u), Final Velocity(v) and the time taken(t) by the car is 8 seconds.

To find the acceleration of the car, we use the formula:-

⠀⠀⠀$\large\bf{\star \: a = \frac{v-u}{t} \: \star }$

According to question:-

On putting the given values in the formula, we get

$\rm{\implies a = \large{\frac{60 - 0}{8}}\: m/s^2}$

$\rm{\implies a = \large\frac{60}{8}\: m/s^2}$

$\large\bf{\implies \: \star a = 7.5 \: m/s^2 \: \star}$

❛ Hence, the acceleration of the car is 7.5 m/s². ❜

___________________

✮ Extra Information ✮ 

➨ First equation of motion = v = u + at

➨ Second equation of motion = s = ut + 1/2 at²

➨ Third equation of motion = v² - u² = 2as

➨ Acceleration = The rate of change of velocity with time, is known as acceleration.