A particle is moving on a straight line in such a way that its velocity v is given by v ( t ) = 2 t + 1 for 0 ≤ t ≤ 5 where t is measured in seconds and v in meters per second. What is the total distance traveled (in meters) by the particle between times t = 0 seconds and t = 5 seconds ? (Do not enter the units)

Respuesta :

Answer:

The total distance traveled by the particle is S = 30.

Step-by-step explanation:

Given that velocity,

v(t) = 2t + 1

To find the total distance travel, we integrate the velocity function, v(t), to obtain the distance function s(t), and evaluate the resulting distance at the interval given. That is at t = 0 to t = 5.

Integrating v(t) with respect to t, we have

s(t) = t² + t + C.

At t = 5

s(5) = 5² + 5 + C

= 25 + 5 + C

= 30 + C

At t = 0

S(0) = 0 + 0 + C

= C

The required distance is now

S(5) - S(0)

= 30 + C - C

= 30.

The total distance travelled by the particle in metres between time t = 0 secs and t = 5 secs is; 30

We are given the velocity function as;

v (t) = 2t + 1

Now, to find distance we will simply integrate the velocity function.

Thus;

S(t) = ∫v (t)

Thus;

S(t) = ∫2t + 1

S(t) = t² + t + c

Where x is a constant variable

Now, we want to find the total distance between times t = 0 seconds and t = 5 seconds.

Thus;

Total distance = S(5) - S(0)

Total distance = (5² + 5 + c) - (0² + 0 + c)

Total distance = 30 metres

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