Question

a car accelerates uniformly from 18km/hr to 36km/hr in 5 mins. the acceleration is

Answer 1

u = 18 km/h = 5 m/s

v = 36 km/h = 10 m/s

t = 5 min = 300s

a = (v - u)/t = (10 - 5)/300 = 5/300

= 0.167 m/s^2

Answer 2

Answer:

Initial velocity (u) = 18km/hr

$= 18 \times \frac{5}{18} \\ \\ = 5 \: meter \: per \: second$

Final velocity (v) = 36km/hr

$= 36 \times \frac{5}{18} \\ \\ = 10 \: meter \: per \: second$

Time (t) = 5 min

= 5 × 60

=300 seconds

$a = \frac{v - u}{t} \\ \\ = \frac{10 - 5}{300} \\ \\ = \frac{5}{300} \\ \\ = \frac{1}{60} \: meter \: per \: {second}^{2}$