Two bicycle riders made a 30 km trip in the same time. cyclist a traveled continuously at an average speed of 20 km/h. cyclist b traveled continuously except for a 20 min. rest break. what was b’s average speed for the time of actual riding ?

Answer : The average speed of cyclist B is 25.714 km/hr

Explanation :

First we have to convert average speed from km/hr to m/s.

Conversion used :

As we are given the average speed of cyclist A 20 km/hr. The average speed in m/s is:

As,

So,

Now we have to calculate the time taken by cyclist A to travel the distance.

conversion used : (1 min = 60 sec)

As per question, cyclist B travels same distance in same time but he took rest for 20 min. That means,

Time taken by cyclist B = 90 min - 20 min = 70 min

Now we have to calculate the average speed of cyclist B.

conversion used : (1 hr = 60 min)

Therefore, the average speed of cyclist B is 25.714 km/hr

the independent variable, the one that is intentionally manipulated, is whether or not the car hits the barrier.

the dependent variable, the one that you measure the response in, is the distance that the washers travel.

explanation:

newton's third law, for every action there is an equal and opposite reaction.