Physics, asked by saurabh17, 4 months ago

The engine of a motorcycle can produces a maximum acceleration 5m/s2. Its brakes can produce a maximum retardation 10m/s2. What is the minimum time in which it can cover a distance of 1.5 km?​

Answers

Answered by Anonymous
4

Answer:

Given,

Acceleration=5m/s

2

Retardation=10m/s

2

Dirtance=1.5km=1500m

S

1

=

2

1

(5)t

1

2

s

2

=

2

1

(10)t

2

2

V=5t

1

5t

1

−10t

2

=0

t

1

=2t

2

Since s

1

+s

2

=1500m

Therefore,

2

1

(5)t

1

2

+

2

1

(10)t

2

2

=1500

=

2

1

(5×4t

2

2

+10t

2

2

)=1500

since t

1

=2t

2

=

2

1

30t

2

2

=1500

t

2

=10s

So, t

1

=20s

Thus the total time is t

1

+t

2

10+20=30s

Similar questions