Question

A satellite's speed is

10,000 m/s. After 1

minute, it is 5,000 m/s.

What is the satellite's

acceleration?

Answer 1

Answer:

-83.33 $m/s^2$

Step-by-step explanation:

Given that:

Initial speed of satellite = 10,000 m/s

Final speed of satellite = 5,000 m/s

Time taken = 1 minute

Let us convert it into seconds.

Time taken = 1 minute = 60 seconds

Let us have a look at the formula:

$v=u+at$

where $v$ is the final speed

$u$ is the initial speed,

$t$ is the time taken and

$a$ is the acceleration

$5000=10000+a\times 60\\\Rightarrow 60a = 5000-10000\\\Rightarrow 60a = -5000\\\Rightarrow a = -\dfrac{5000}{60}\\\Rightarrow \bold{a = -83.33\ m/s^2}$

Negative sign indicates that the satellite is in slowing down motion i.e. its speed is decreasing.

So, the answer is:

-83.33 $m/s^2$