Screenshot 2023-11-29 151403

Question 1 A roller-coaster car rolls down a track, reaching a speed of v at the bottom. If the height of the track is increased by a factor of 4.00, assuming the track is frictionless, by what factor will the speed at the bottom increase? O 4.00 O 16.0 O 2.00 O 6.00 Question 2 vz The balls are thrown from a cliff with the same speed but different angles. Which ball has the greatest speed just before it hits the ground? O BallA O BallB O Ballc O BallsAand C O They all have the same speed. Question 3 A spring has an unstretched length of 12.0 cm. It exerts a restoring force Fwhen stretched to a length of 13.0 cm. At what compressed length is the restoring force 3F? O 4.00cm O 9.00cm O 10.0cm O 36.0cm