A basketball is thrown at 45° to the horizontal. The hoop is located 3.6 m away horizontally at a height of 1.2 m above the point of release. What is the required initial speed?
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- A projectile is launched off of a 19.6 m high building with an initial velocity of 26.4 m/s at an angle of 33.2 degrees relative to the horizontal. What is the speed of the projectile when it reaches it maximum height?A clump of soft clay is thrown horizontally from 7.80 m above the ground with a speed of 20.0 m/s. Assume it sticks in place when it hits the ground. What is the horizontal distance along the ground after 1.50 s?A roofer tosses a small tool to the ground. What minimum magnitude vo of horizontal velocity is required to just miss the roof corner B? Also determine the distance d. Answers: Vo = i d= i a -2.9 m- B 1.2 m + 0.7 m E 4.1 m m/s
- A person throws a ball horizontally from the top of a building that is 24.0m above the ground level. The ball lands 100m down range from the base of the building. What was the initial speed of the ball? Neglect air resistance and use g = 9.8m / s * 2An athlete in a long jump trial leaves the ground at an 80o angle and covers a horizontal distance of 8.7 m. The speed with which he can jump remains constant. What should he do to increase the horizontal distance of his jump? Explain why this would work.A person launches a rock with an initial speed of 250 m/s at an angle of 45 degrees above the horizontal. What is the speed of the rock when it reaches its maximum height? Give your answer to 2 significant figures.
- A roofer tosses a small tool to the ground. What minimum magnitude vo of horizontal velocity is required to just miss the roof corner B? Also determine the distance d. Answers: Vo = d = i i -2.8 m 10 B a + 1.4 m +9 0.9 m 3.0 m m/s mA baseball player friend of yours wants to determine his pitching speed. You have him stand on a ledge and throw the ball horizontally from an elevation 3.0 m above the ground. The ball lands 20 m away. What is his pitching speed?A projectile is fired with a speed u at an angle θ with the horizontal. Its speed when its direction of motion makes an angle α with the horizontal is:a. uSinθ sec αb. uCosθ sec αc. uCosθ Cos αd. uSecθ Sin αe. uSecθ Cos α
- At serve, a tennis player aims to hit the ball horizontally (Figure 1). What minimum speed is required for the ball to clear the 0.90-mm-high net about 15.0 mm from the server if the ball is "launched" from a height of hhh = 2.30 mm ? Express your answer to three significant figures and include the appropriate units.Jen decides to kick a soccer ball onto the roof on the school, which has a height H. Jen stands in front of the building and kicks the ball with an initial speed of v₁ = 20.0 m/s at an angle of 0 = 40.0 degrees above the horizontal. The ball strikes the roof a horizontal distance D from its launch point, with a final velocity of Vf 17.3 m/s at an angle a = 27.7 degrees below the horizontal. Use g = = 9.81 m/s². D a) What is the height H of the school? b) What is the distance D? α HY 0 H D A soccer player kicks the ball, which moves as shown in the figure. You are given this information: the angle e and the maximum height H. Calculate the initial speed vo and the horizontal distance D. DATA 0 = angle = 25 degrees; H = 4.4 m; {initial speed} (in m/s) X A: 4.61 OB: 5.76 OC: 7.20 OD: 9.01 OE: 11.26 OF: 14.07 OG: 17.59 OH: 21.99 {horizontal distance) (in m) OA: 33.40 B: 37.74 OC: 42.65 OD: 48.19 OE: 54.46 OF: 61.54 OG: 69.54 OH: 78.58