Question

A helicopter’s speed increases from 30 m/s to 40 m/s in 5 seconds.

What is the acceleration of this helicopter?

Answer 1

2 m/s²

Step-by-step explanation:

To calculate the acceleration of an object, we use the following formula:

`\boxed{a = (v - u)/(t)}`,

where:

• a = acceleration

• v = final speed

• u = initial speed, and

• t = time taken

We are told in the question that the final speed of the helicopter is 40 m/s, its initial speed is 30 m/s, and that the time it took to get from 30 m/s to 40 m/s is 5 seconds.

Therefore, using this information, as well as the formula above, we can evaluate the acceleration of the helicopter:

`a = (40 - 30)/(5)`

`= (10)/(5)`

`= \bf 2 \: m/s^2`

So the acceleration of the helicopter is 2 m/s².