Question

A car starts from point A, goes 50 km in a straight line to point B, immediately turns around and returns to A. the time for this round trip in 2 hours. What is the average speed of the car?
A. 0 km/hr
B. 5p km/hr
C. 100 km/hr
D. 200 km/hr

Answer 1

Answer:

A car starts from point A to point B which are separated by a distance of

50 km immediately turns around and returns to A. The time for this trip is

2 hours, the average speed of the car is 50 km/h

Explanation:

• The average speed of a body is the total distance covered by that body divided by the total time taken to cover the total distance, that is

      average speed =total distance /total time

From the question, it is given that

the car starts from a point A to another point B

the distance between the two points $s=50km$

since the car travels back to point  A,

the total distance traveled by car is $d=s+s=100km$

time taken to complete the round trip $t=2hrs$

therefore the average speed is $v=100/2=50km/h$