The lob in tennis is an effective tactic when your opponent is near the net. It consists of lofting the ball over his head, forcing him to move quickly away from the net (see the drawing). Suppose that you loft the ball with an initial speed of 15.0 m/s at an angle of 50.0° the horizontal. At this instant your opponent is 10.0 m away from the ball. He begins moving away from you 0.32 s later, hoping to reach the ball and hit it back at the moment that it is 2.10 m above its launch point. With what minimum average speed must he move? (Ignore the fact that he can stretch, so that his racket can reach the ball before he does.) Number 15.0 m/s 50.0⁰ Units 10.0 m 2.10 m

A diver runs off a platform with an initial horizontal velocity of 1.16 m/sin the positive x-direction. The platform is at a vertical height of8.90 mabove the water. What is the horizontal distance from the platform at which he strikes the water? O 1,56 m O 0.45 m O 1.88 m O 2.47 m O 1.83 m O 0.94 m

ab 3. Three projectiles (A, B, and C) are launched with different initial speeds so that they reach the same maximum height, as shown in the figure. List the projectiles in order of increasing initial speed (smallest v; written in the first blank). у then

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A physics student stands on a cliff overlooking a lake and decides to throw a softball to her friends in the water below. She throws the softball with a velocity of 24.5 m/s at an angle of 31.5° above the horizontal. When the softball leaves her hand, it is 12.5 m above the water. How far does the softball travel horizontally before it hits the water? Neglect any effects of air resistance when calculating the answer. Macmillan Learning horizontal distance: E

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Note: for this problem, you can neglect air resistance.An action hero is trying to use a circus cannon to get to the roof on a building 63.8 meters away. She launches herself from the ground with an initial velocity of 29.4 m/s at an angle 59 degrees above the horizontal, but instead of landing on the roof she hits the wall of the building. launching at a speed of 47.0 m/s. She goes over the building entirely and lands on the ground on the other side.How much time does she spend in the air? What is the height of the action hero at the peak of her trajectory? How far from her launch point will she land?

A golfer hits a shot to a green that is elevated 3.30 m above the point where the ball is struck. The ball leaves the club at a speed of 18.4 m/s at an angle of 45.0˚ above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air resistance, find the speed of the ball just before it lands.

During a baseball game, a baseball is struck at ground level by a batter. The ball leaves the baseball bat with an initial speed v0 = 42 m/s at an angle θ = 43° above horizontal. Let the origin of the Cartesian coordinate system be the ball's position the instant it leaves the bat. Air resistance may be ignored throughout this problem. a.)Express the magnitude of the ball’s initial horizontal velocity v0x in terms of v0 and θ.  b.)Express the magnitude of the ball’s initial vertical velocity v0y in terms of v0 and θ.  c.)Find the ball’s maximum vertical height hmax in meters above the ground.

I asked the question here before but the solution was wrong. that's why I will ask again.  Sam and William are playing with a ball. Sam throws the ball 30 s after William started to run away from the starting position. If William is accelerating 1.6 m/s2 starting from rest, find the initial velocity of the ball to hit the moving target and the ground at the same time. The ball is thrown 1.5 m from the ground and 46° from the horizontal.   Choices: a. 112 m/s  b. 126 m/s  c. 163 m/s  d. 143 m/s