Question

A car travles20 km in 1 hour and another 40 km in 3 hour what is the average speed of car

Answer 1

QUESTION:

A car travles20 km in 1 hour and another 40 km in 3 hour what is the average speed of car.

ANSWER:

AVERAGE VELOCITY = 15 km/h or 4.16 m/s

Explanation:

given that,

A car travles 20 km in 1 hour

and another 40 km in 3 hour

here,

we have,

distance travelled by car of 20 km in 1 hour

distance travelled by the car of

40 km in 3 hours

we know that,

Average velocity = total distance travelled / total time taken

total distance travelled = 20 + 40

= 60 km

total time taken = 1 + 3 = 4 hours

now,

putting the values,

Average velocity = 60/4

= 15 km/h

now,

In m/s

total distance covered = 60 km =

60 × 1000 m = 60000 m

total time taken = 4 hours = 4 × 3600

= 14400 seconds

now putting the values,

Average velocity = 60000/14400

= 4.16 m/s

so,

AVERAGE VELOCITY

= 15 km/h or 4.16 m/s

Answer 2

Answer:-

=4.16 m/s or 15.km/hr

Explanation:-

60Km is the total Distance travelled in the car

calculation:-

$20+40=60 \: kilometer$

Average speed of the car =1+3=4hours

$Speed = \frac{60}{4} = \frac{15Km}{hr}$

Adding the values:

AV = 60/4

15 km/h

= 60 km = 60 × 1000 m = 60000 m

= 4 hours = 4 × 3600

= 14400 seconds

Again adding the values:

AV = 60000/14400

= 15.Km/hr or 4.16 m/s