Question

A body starts from rest and is uniformly accelerated for 30s. The distance travelled in the first 10s is $x_1$, next 10s is $x_2$ and last 10s is $x_3$. Then $x_1$:$x_2$:$x_3$ is the same as

• A. 1:2:4
• B. 1:2:5
• C. 1:3:5
• D. 1:3:9

Answer 1

The correct option is C

1:3:5

Use equation of motion $s=ut+\frac{1}{2}$a$t^2$

Substituting the value for time for each interval, we get,

$x_1$:$x_2$:$x_3$=1:3:5