Question

A car accelerates uniformly from rest and acquires a speed of 72km/h in 10sec find the acceleration and total distance travelled at 7th second.​​

Answer 1

Answer:

Speed U = 0 (rest)

speed V = 72 km/h = 20 m/s

time = 10sec

Explanation:

Acceleration (a) = v - u / t = 2 m/s^2

Distance travelled In 7th second = U+a^2(2n - 1) = 0+ 2^2(2×7 - 1) =4×13=52 m