Question 1

A car starts from rest. if the velocity of car become 15m/s after 20s calculate the acceleration of the car.

Question 2

$\Large\rm{\underbrace{\green{ \: Acceleration \: = \: \ (v)/(t) \: }}}$

$\bf \large \implies \: Acceleration \: = \: (15)/(20) \\$

$\bf \large \implies \: Acceleration \: = \: \cancel(15 \: \small \: m /s )/(20 \: s) \: = \: (3)/(4) \: m /s ^( - 1) \\$

$\bf \large \implies \: Acceleration \: = \: \cancel(3)/(4) \:m /s ^( - 1) \: = \: 0.75 \: \: m /s ^( - 1) \\$

$\bf \large \implies \: \: Acceleration \: = \: 0.75 \: \: m /s ^( - 1) \\$

Question 3

Answer:

$0.75 {ms}^( - 2)$

Explanation:

$acceleration = (velocity)/(time) \\ = (15ms ^( - 1) )/(20s) \\ = (3)/(4) ms ^( - 2) \\ = 0.75 {ms}^( - 2)$

Please log in or register to add a comment.

Please log in or register to answer this question.