Question

v=0, u=15m/s1, a=1m/s2
How much displacement and time

Answer 1

Solution.

$v=0;$

$u=15m/s;$

$a=1m/s^2;$

$S-?; t-?;$

$S=\dfrac{u^2-v^2}{2a};$

$S=\dfrac{(15m/s)^2-0}{2\sdot1m/s}=112.5m;$

$a=\dfrac{u-v}{t} \implies t=\dfrac{u-v}{a};$

$t=\dfrac{15m/s-0}{1m/s^2}=15s;$

Answer: $S=112.5m;$

$t=15s.$