Question

a car starts from rest and acquires a velocity 72 km/h in 4s find (i) the acceleration, (ii) distance traveled by the car in 4sec, the distance travelled by the car in 4th sec,​

Answer 1

$\huge \underline \bold{solution \: - - }$

$\bold \green{i) initial \: velocity(u) \: = 0 km/h}$

$\bold \green{final \: velocity(v) \: = 72 km/h}$

$\bold \green{time \: = 4s}$

$\bold \green{acceleration(a) \: = ?}$

$\bold{a \: = \frac{v - u}{t} }$

$\bold{a \: = \frac{72 - 0}{4}}$

$\bold{a \: = \frac{72}{4} }$

$\bold \red{ = \: 18 \: \: ans}$