Question

a car is moving with a speed of 20 metre per second calculate the distance travelled by the car in 1 minute​

Answer 1

Answer:

Given,

Speed=20m/s,d=50m,retardation=5m/s

2

Let the ppossible reaction time be t

s

So the car moves 20tm And applied breaks with retardation 5m/s

2

So, the total distance under retardation is ≤50m

Thus the distance under the application of retardation =

2×5

20

2

−0

2

=s

′

⇒s

′

=40m

Therefore, 20t

s

+40≤=50⇒20t

s

≤50−40⇒20t

s

=10⇒t

s

≤

2

1

≤0.5s

Answer 2

$Average speed of the object when it moves with different velocities in equal displacement is given by  -</p><p></p><p>Vavg=V1+V22V1V2</p><p></p><p></p><p>$

Average speed of the object when it moves with different velocities in equal displacement is given by -

V

avg

=

V

1

+V

2

2V

1

V

2