:) A truck travels with a speed of 15m/s for half of the time and remain half of the time it travels
with 30m/s. Calculate the average speed for the truck for the entire journey.
Answers
Given :
➨ A truck travels at a speed of 15m/s for first half of the total time and at a speed of 30m/s for second half time of the total time.
To Find :
➛ Average speed of truck during the entire journey.
Concept :
➠ Average speed is defined as the ratio of total distance distance travelled to the total time taken.
➠ It is a scalar quantity.
➠ It has only magnitude.
➠ It can't be negative or zero.
✪ If particle moves in two equal intervals of time at different speed v¹ and v² respectively, then
✭ v = v¹ + v² / 2
Calculation :
⇒ v = v¹ + v² / 2
⇒ v = 15 + 30 / 2
⇒ v = 45/2
⇒ v = 22.5 m/s
Given:-
A truck travels with a speed of 15 m/s for half of the time and remain half of the time it travels with 30 m/s.
To Find:-
Calculate the average speed for the truck for the entire journey.
Concept:-
➡ Average speed is defined as the ratio total distance to the time taken.
➡ It's a scalar quantity . It has not both magnitude and direction. It has only magnitude.
➡ It can't be negative or zero.
Calculations:-
➡ V = V^1 + V^2 /2
➡15 + 30/2
➡45/2
➡ 22.5 m/s.