Revision: ADVANCED PHYSICS – Projectile Motion Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. Advanced Physics: Projectile Motion - Revision Quiz Test your understanding of Advanced Physics: Projectile Motion here: 1 / 5 1) A motorcycle stunt-rider moving horizontally takes off from a point 1.25 m above the ground, landing 10 m away as shown. What was the speed at take-off? 20 m s–1 10 m s–1 5.0 m s–1 15 m s–1 2 / 5 2) A projectile is fired at an angle α to the horizontal at a speed u, as shown. What are the vertical and horizontal components of its velocity after a time t? Assume that air resistance is negligible. The acceleration of free fall is g. A B D C 3 / 5 3) A cannon fires a cannonball with an initial speed v at an angle α to the horizontal. Which equation is correct for the maximum height H reached? 4 / 5 4) A double-ended launching device fires two identical steel balls X and Y at exactly the same time. The diagram shows the initial velocities of the balls. They are both launched horizontally, but Y has greater speed. Which statement explains what an observer would see? Both X and Y reach the ground simultaneously, because gravitational acceleration is the same for both. Both X and Y reach the ground simultaneously, because air resistance will cause both to have the same final speed. Y reaches the ground before X, because Y has greater initial speed. X reaches the ground before Y, because X lands nearer to the launcher. 5 / 5 5) A ball is thrown horizontally at a speed of 25 m/s from the top of a cliff. If the ball hits the ground 4.0 s later, how high is the cliff? 100 m 80 m 40 m 6.3 m Your score is Restart quiz
