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1. During training, an aerial skier takes off from a ramp that is inclined at 40° to the horizontal and lands in a pool that is 10.0 m below the end of the ramp. If she takes 1.50 s to reach the highest point of her trajectory, calculate: the speed at which she leaves the ramp the maximum height above the end of the ramp that she reaches the time for which she is in mid-air. 2. A projectile is launched with an initial velocity of 1.5 km s –1 at an angle θ. The target is located at a distance of 3000 m and on the same level. The projectile strikes the target after 4.0 s. Determine the horizontal velocity of the projectile. Calculate the value of θ. 3. The diagram shows the trajectory of a Vortex after it has been thrown with an initial speed of 10.0 m s –1 . The Vortex reaches its maximum height at point Q; 4.00 m higher than its starting height. What is the value of the angle θ that the initial velocity vector makes with the horizontal? What is the speed of the Vortex at point Q? How far away is the Vortex when it reaches point R? 4. Two identical tennis balls X and Y are hit horizontally from a point 2.0 m above the ground with different initial speeds: ball X has an initial speed of 5.0 m s –1 while ball Y has an initial speed of 7.5 m s –1 . Calculate the time it takes for each ball to strike the ground. Calculate the speed of ball X just before it strikes the ground. What is the speed of ball Y just before it strikes the ground? How much further than ball X does ball Y travel in the horizontal direction before bouncing 5. A senior physics class conducting a research project on projectile motion constructs a device that can launch a cricket ball. The launching device is designed so that the ball can be

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1. During training, an aerial skier takes off from a ramp that is inclined at 40 to the horizontal and lands in a pool that is 10.0 m below the end of the ramp. If she takes 1.50 s to reach the highest point of her trajectory, calculate: the speed at which she leaves the ramp the maximum height above the end of the ramp that she reaches the time for which she is in mid-air.2. A projectile is launched with an initial velocity of 1.5 km s1 at an angle . The target is located at a distance of 3000 m and on the same level. The projectile strikes the target after 4.0 s. Determine the horizontal velocity of the projectile. Calculate the value of .3. The diagram shows the trajectory of a Vortex after it has been thrown with an initial speed of 10.0 m s1. The Vortex reaches its maximum height at point Q; 4.00 m higher than its starting height.

What is the value of the angle that the initial velocity vector makes with the horizontal? What is the speed of the Vortex at point Q? How far away is the Vortex when it reaches point R?4. Two identical tennis balls X and Y are hit horizontally from a point 2.0 m above the ground with different initial speeds: ball X has an initial speed of 5.0 m s1 while ball Y has an initial speed of 7.5 m s1. Calculate the time it takes for each ball to strike the ground. Calculate the speed of ball X just before it strikes the ground. What is the speed of ball Y just before it strikes the ground? How much further than ball X does ball Y travel in the horizontal direction before bouncing5. A senior physics class conducting a research project on projectile motion constructs a device that can launch a cricket ball. The launching device is designed so that the ball can be launched at ground level with an initial velocity of 28 m s1 at an angle of 30 to the horizontal.

At what time will the ball reach its maximum height? What is the maximum height that is achieved by the ball? What is the acceleration of the ball at its maximum height? At which point in its flight will the ball experience its minimum speed? What is the minimum speed of the ball during its flight? At what time does this minimum speed occur?

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