Question : What type of force acts on a car moving around a curve?

Option 1: Centrifugal force

Option 2: Cohesive force

Option 3: Centripetal force

Option 4: Gravitational force

Question : A train 180 m long moving at a speed of 20 m/sec overtakes a man moving at a speed of 10 m/sec in the same direction. The train passes the man in:

Option 1: 6 sec

Option 2: 9 sec

Option 3: 18 sec

Option 4: 27 sec

Question : A train 100 metres long is running at a speed of 30 km/hr. The time (in seconds) in which it will pass a man standing near the railway line is:

Option 1: 10

Option 2: 11

Option 3: 12

Option 4: 15

Question : A train covers the distance between station A and station B in 45 minutes. If the speed of the train is reduced by 5 km/hr, then the same distance is covered in 48 minutes. The distance between stations A and B is:

Option 1: 60 km

Option 2: 64 km

Option 3: 80 km

Option 4: 55 km

Question : Kinetic energy depends on:

Option 1: the velocity or speed of the moving body

Option 2: the mass of the moving body

Option 3: the pressure of the moving body

Option 4: both mass and velocity of the moving body