Question

a car is accelerated from 10 m/s to 15 m/s. the increase in kinetic energy is Ek1. Again the car is accelerated from 15 m/s to 20 m/s. the kinetic energy is Ek2. What is the ratio of

Answer 1

Step-by-step explanation:

Energy required to accelerate from 10m/s to 20m/s E

1

=

2

1

m(400−100)

Energy required to accelerate from rest to 10m/s E

2

=

2

1

m(100−0)

E

2

E

1

=

2

1

m(100)

2

1

m(300)

=3times

Answer 2

Answer:

$\sqrt[ff \times \frac{m}{i} \times \frac{{}{j} \times \frac{g}{h} ]{hgh}$