# Calculate: 5656

Janko is skating at a speed of 18 km/h. Its kinetic energy is 0.5 kJ. Janko weighs 40 kg.

Calculate:

1. what work will the braking forces do before Janko stops?

2. How big is the braking force when Janko stops after crossing a track of 14 m.?

Calculate:

1. what work will the braking forces do before Janko stops?

2. How big is the braking force when Janko stops after crossing a track of 14 m.?

## Correct answer:

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