Could someone help me with this, it would mean a lot, thank you

Question 1 By what factor will the kinetic energy of a particle change if the speed is increased by a factor of 2? O 2 0 2 0 4 0 8 Question 2 Ball a In the figure provided, three balls of equal masses are released from the same position. If they are released with equal speeds, which ball has the fastest speed when it hits the ground? Ball c O Ball bhas the fastest speed. O Ball chas the fastest speed. O Ball a has the fastest speed. O They all have the same speed. Ball b Question 3 A spring gun shoots out a plastic ball at speed vo. If the ball's speed is increased by a factor of 3, what distance must the spring have been compressed? O 3 times the distance. O 1/3 times the distance 6 times the distance. O 1.5 times the distance. Question 4 U() In the figure provided, a 36.0 g particle is released from rest at x = 1.0 mm. What is the maximum speed of the particle? Assume mechanical energy is conserved. O 16.7 m/s O 12.9 m/s O 0.408 m/s O 6.45 m/s