How far apart are they 1 minute before they pass each other? (A) 60 miles (B) 30 miles (C) 6 miles (D) 3 miles (E) 2 miles (F) 1 mile 10. And The Winner Is... Two marbles roll along two horizontal tracks. One track has a dip, and the other has a bump of the same shape. Which marble wins? 11. Time of Flight of Three Projectiles. Three projectiles are launched from the same point over a level ground with speeds and They all attain the same maximum height. VA, VB, VC. Which of the following is true about their times of flight? (A) = = tA tB tC (B) > > tA tB tC (C) < < tA tB tC (D) None of these 12. Initial Speeds of Three Projectiles. Three projectiles are launched from the same point over a level ground with speeds VA, VB, and VC. They all attain the same maximum height. Which of the following is true about their initial speeds? (A) = = VA VB VC (B) > > VA VB VC (C) < < VA VB VC (D) None of these 13. Speed of a Projectile and the Angle of Launch. A ball is launched from the same height repeatedly with the same speed but in different directions A, B, and C as shown below. It Vo reaches the ground with speeds and respectively. Which of the following is true VA, VB, VC about these speeds?
How far apart are they 1 minute before they pass each other? (A) 60 miles (B) 30 miles (C) 6 miles (D) 3 miles (E) 2 miles (F) 1 mile 10. And The Winner Is... Two marbles roll along two horizontal tracks. One track has a dip, and the other has a bump of the same shape. Which marble wins? 11. Time of Flight of Three Projectiles. Three projectiles are launched from the same point over a level ground with speeds VA, VB, and VC. They all attain the same maximum height. Which of the following is true about their times of flight? (A) tA = tB = tC (B) tA > tB > tC (C) tA < tB < tC (D) None of these 12. Initial Speeds of Three Projectiles. Three projectiles are launched from the same point over a level ground with speeds VA, VB, and VC. They all attain the same maximum height. Which of the following is true about their initial speeds? (A) VA = VB = VC (B) VA > VB > VC (C) VA < VB < VC (D) None of these 13. Speed of a Projectile and the Angle of Launch. A ball is launched from the same height repeatedly with the same speed Vo but in different directions A, B, and C as shown below. It reaches the ground with speeds VA, VB, and VC respectively. Which of the following is true about these speeds?
physics_thinking_into.docx