In a vehicle braking test, the initial speed is 18 km/h. When brakes are applied, the vehicle leaves skid marks 5.0 m in length before coming to a stop. What is the magnitude of the skid resistance (coefficient of friction)? (Take g = 10 m/s2)

Ramesh covers 56 part of the total distance by bus and the remaining 36 km by car. What is the total distance of his journey?

A person covers a distance of L km in 12 hours. If he increases his speed by 10 m/s, he covers the same distance in 8 hours. Which of the following statements is/are correct? I. The value of L is 760 km. II. The original speed of the person is 72 km/h.