Question

a car travels at a uniform speed of 30 km per hour for 30 minutes and then at uniform speed at 40 km for next 40 min. calculate the average speed of the car

Answer 1

Step-by-step explanation:

So, the time required by the car to cover 30km at the uniform speed of 40 km/hr is =3040 hours. Again, the time required to cover the last 30 km at the uniform speed of 20 km/hr is =3020 hours.

Answer 2

Answer:

ok

Step-by-step explanation:

So, Vavg(average speed)= Total Distance/Time

= total Distance = 30km+40km=70km

= total Time = 30minutes+40minutes=70minutes

Distance/Time = 70/70 =1km/m

or 5/18 m/s