Question

the speed of a car is 54 km/h and acquires a speed 108 km/h in 5 seconds . calculate the acceleration​

Answer 1

Answer:

Explanation:

Given that :

Intial velocity. ,u = 0 m/s

final velocity, v = 54 km/hr

= ( 54 x 5)/18 m/s

= 15 m/s

Time, t = 2 min = 2×60 s = 120 second

we know

Vol 92

V u a t putting the value

15 120 0 a 0.125 ms -2

By 2nd equation of motion we know

s = ut + 1 x at²

= 0.125 x 60 × 120

S= 900 m

Answer 2

Answer:

10. 8 (km/ h)/ s

Explanation:

Initial speed = 54 km/ h

Final speed = 108 km/ h

Them taken = 5s

Acceleration = ( final speed - initial speed)/ time taken

= (108 - 54)/ 5

= 54/ 5

= 10. 8 (km/ h)/ s

_______________

Hope this helps!