Question

A car is moving with an intital velocity of 10m/s changes its velocity to 20m/s in 5 seconds .find the acceleration of the car ​

Answer 1

Answer:

$Acceleration \: of \: the \: car \: = \: 2 \: ms {}^{ - 2}$

Step-by-step explanation:

$Given: \\ u = 10 \: ms {}^{ - 1} \\ v = 20 \: ms {}^{ - 1} \\ t = 5 \: sec \\ Acceleration \: = \frac{v \: - \: u}{t} \\ = > \frac{20 \: - \: 10}{5} = \frac{10}{5} = 2 \\ Hence \: acceleration \: = 2 \: ms {}^{ - 2}$

Answer 2

Answer:

2 m/s²

Step-by-step explanation:

u = 10m/s

v = 20m/s

t = 5s

a = slope of v-t graph

= ∆x/∆t

= (v-u)/t

or

v = u+at velocity time relation

=> a = (v-u)/t

a = (20-10)/5

= 10/5

= 2m/s²