Question

an object Travels 20 metres in 5 second and again it travel 20 in 3 second calculate the average speed​

Answer 1

Answer:5 m/s

Explanation:Average speed = total distance covered/total time taken

Total distance= (20+20) m = 40m

Total time taken= (5+3) s = 8s

Therefore, Average speed = (40/8) m/s =5 m/s

Answer 2

Answer:

Average speed of an object is 5 m /s.

Explanation:

Total distance covered = (20 + 20 ) m

Total distance covered = 40m

Total time taken = (5 + 3) seconds

Total time taken = 8 seconds

$average \: speed \: = \frac{total \: distance \: covered}{total \: time \: taken}$

Average speed = 40/8 m/s.

Average speed = 5 m/s

AVERAGE SPEED

• It is scaler quantity.
• Si unit of average speed is m/s.
• Other units of average speed are cm/s, km/hr etc.
• Average speed can be zero, positive but cannot be negative.