Question

A truck initially moving with a speed of 50 km/h accelerate and moves with the speed of 70 km/h after 10 seconds . Calculate the acceleration of the truck.

Answer 1

Hello,

The initial velocity of the truck = 50 km/hr
Changing into SI unit
The initial velocity = 50*5/18 m/sec=250/18 m/sec


Final velocity of the truck = 70 km/hr
Changing into SI unit :
Final velocity = 70 * 5/18 m/sec= 350/18 m/sec


Time = 10 seconds

Acceleration =?

We know that, from equations of motion :-

✔️a= v-u/t

So, Acceleration =
$\frac{ \frac{350}{18} - \frac{250}{18} }{10} = \frac{350 - 250}{18 \times 10} = \frac{100}{18 \times 10} = \frac{10}{18}$
So,
The acceleration of the truck ⛟ is approximately 10/18 m/sec²

Hope this will be helping you ✌️

Answer 2

Answer:

The initial velocity of the truck = 50 km/hr

Changing into SI unit

The initial velocity = 50*5/18 m/sec=250/18 m/sec

The final velocity of the truck = 70 km/hr

Changing into SI unit :

Final velocity = 70 * 5/18 m/sec= 350/18 m/sec

Time = 10 seconds

Acceleration =?

We know that, from equations of motion :-

✔️a= v-u/t

So, Acceleration =

So,

The acceleration of the truck ⛟ is approximately 10/18 m/sec²

Hope this will be helping you ✌️

Explanation: