Question

A body with an initial velocity of 18 km/h accelerates uniformly at the rate of 9 cm/s^2 over a distance of 200 m. Calculate:
i) the acceleration in m/s^2
ii) it's final velocity in m/s​

Answer 1

Answer:

1) 0.0009 m²/s

2) √61 m/s

Explanation:

1) 9 cm²/s

9/10000 m²/s = 0.0009 m²/s

2) 18 km/h = 18*1000/3600=5 m/s

use kinematic 2nd equation

v² =u²+ 2*a*s

=5²+2*0.0009*200

= 25.36

v= √25.36