Question

An object is moving for first 30 minute of its journey with the speed of 50 km/hr and next 1 hour with the speed of 25 km /hr. the average speed of the object will be

Answer 1

Hey mate your answer is here and thanks for this question...

The average speed of an object is the total distance traveled by the object divided by the elapsed time to cover that distance.

Average speed is a rate. In kinematics, a rate is always a quantity divided by the time taken to get that quantity (the elapsed time). Since average speed is the rate position changes, average speed = distance traveled/time taken.



So, total distance = 50km + 25km
= 75km
total time = 30 + 1 hr
= 1.30 hrs..

=> Average speed = 75/1.5
= 750/15
= 50

So the average speed of the object will be...
50km/hour..


Hope it helps u..

Answer 2

total time = 1 .5 hour

total distance= ?

speed = 75 km/hr after adding

average speed

calculatimg first the distance 1.5× 75

= 112.5

average speed is 50+25×2=100
100÷2=50