Question

a car is starting from rest and moves with a constant acceleration of 2m/s^2 for 10 sec. calculate the velocity of the car after 10 seconds

Answer 1

Given:

A car starts from the rest and moves with a constant acceleration of 2 m/s² for 10 secs

To find:

The velocity of the car after 10 seconds

Solution:

The 1st equation of motion is given by,

$\boxed{\bold{v\:=\:u\:+\:at}}$

where

v = final velocity

u = initial velocity

a = acceleration

t = time

According to the question, the car starts from the rest ∴ u = 0

Now, we will substitute the values of u = 0, a = 2 m/s² and t = 10 s in the above equation of motion,

v = 0 + (2 × 10)

⇒ v = 20 m/s

Thus, the velocity of the car after 10 seconds is 20 m/s.

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Answer 2

Velocity of the car after 10 seconds = 20 m/s

Explanation:

Given: initial velocity u = 0; acceleration a = 2 m/s²; t  = 10s

Find: Final velocity v.

Solution:

We can find the final velocity of the car using the first equation of motion.

 v = u + at

 v = 0 + 2 * 10

 v = 20 m/s

Velocity of the car after 10 seconds = 20 m/s