Question

A ship is moving at a speed of 56 km/h. One second later it is moving at speed of 58 km/h. What is its acceleration ?​

Answer 1

Answer:

5/9 m/s²

Explanation:

acceleration = (v-u)/t

56km/h = 28x5/9 m/s

58km/h = 29x5/9 m/s

a= (29x5/9 - 28x5/9)/1

= 5/9 m/s² ans

Answer 2

✬ Acceleration = 7200 km/h² ✬

Explanation:

Given:

• Initial speed of ship is 56 km/h.
• Final speed of ship is 58 km/h.
• Time taken to attain final speed is 1 s.

To Find:

• What is the acceleration of ship ?

Formula to be used:

• v = u + at

Solution: Here we have

• u = 56 km/h

• v = 58 km/h

Changing time into hour.

➟ t = 1/60 × 60 h ㅤㅤ{ 1 hr = 3600s)

➟ t = 1/3600 h

Putting all the values in above formula

$\implies{\rm }$ v = u + at

$\implies{\rm }$ 58 = 56 + a × 1/3600

$\implies{\rm }$ 58 – 56 = a/3600

$\implies{\rm }$ 2 × 3600 = a

$\implies{\rm }$ 7200 km/h² = a

Hence, the acceleration of the ship is 7200 km/h².