Hi i need help in these question and please answer them before 5th July - On reaching the top of a slope 6 m high from its bottom, a cyclist has a speed of 1.5 m/s .Find the kinetic energy and the potential energy of the cyclist. The mass of the cyclist and his bicycle is 40 kg. - A child’s toy launches a model parachutist of mass 0.40 kg vertically upwards. The model parachutist reaches a maximum height of 8.5 m. Calculate: a) the gravitational potential energy gained by the model parachutist, b) the minimum possible speed with which the model parachutist was launched. c) In practice, the launch speed must be greater than the value calculated in (b).Explain why? - A car weighing 12 kN has speed of 20 m/s . Find its kinetic energy. - A 50 kg man moved 25 steps up in 20 seconds. Find his power, if each step is 16 cm high.