Question

the graph shows the speed of a vehicle during the final 50 seconds of a journey at the start of the 50 seconds the speed is k metres per second

Answer 1

The value of k is 34 meters per second.

To solve for the value of k, we can use the formula:

distance = speed * time

We are given that the distance traveled during the 50 seconds is 1.7 kilometers, and the speed is k meters per second.

We can convert the distance to meters by multiplying by 1000:

1.7 kilometers * 1000 meters/kilometer = 1700 meters

Now we can plug in the values we know into the formula:

1700 meters = k meters/second * 50 seconds

Solving for k, we get:

k = 1700 meters / 50 seconds = 34 meters/second

Therefore, the value of k is 34 meters per second.