A projectile is fired at an upward angle of 45.6° from the top of a 342m cliff with a speed of 153m/s. What will be its speed when it strikes the ground below?
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- a ball is thrown from a point of 1m above the ground. the initial velocity is 11.9 m/s at an angle of 30 degrees above the horizontal. what is the speed of the balll at gthe highest point of the trajectory?A ball is thrown at 20 m/s at an angle of 65o above the horizontal. The ball leaves the throwers' hand at a height of 1.8 m. At what height will it strike a wall 10 m away? What would the height be if Vo were 30 m/sA cannon is elevated to 35º and can launch a projectile at a speed of 300 m/s. It is to launch a projectile onto a high plateau 1300 m above the cannon. Can the cannon launch the projectile onto the plateau? If so, how fast will it be traveling when it lands?
- A diver jumps off a cliff of h at an angle of 0 =38° (see figure below). He reaches a maximum height of hmaz x = 42m from the base of the cliff. Determine the speed of the diver just before he hits the water, = 3m above the top of the cliff before falling to the water below. He hits the water VA =?.Express your answer in units of m/s. Take g 9.80m/s2. Round your answer to zero decimal places. Jrmax Answer:A circus man is shot out of a cannon 500 meters above ground at a speed of 25 m/s at a launch angle of 50° what is the velocity after 5 seconds?A ski jumper starts from rest 50.0 m above the ground on africtionless track and flies off the track at an angle of 45.0°above the horizontal and at a height of 10.0 m above the levelground. Neglect air resistance. (a) What is her speed whenshe leaves the track? (b) What is the maximum altitude sheattains after leaving the track? (c) Where does she land relativeto the end of the track?
- A golfer is attempting to reach the elevated green by hitting his ball under a low-hanging branch in one tree A, but over the top of a second tree B. If the launch speed of the golf ball is vo= 105 mi/hr, what launch angle will put the first impact point of the ball closest to the pin? How far from the pin (distance d) is this impact point? VO 0 = d= 0- 12 Answers: yd i MI A 24' 71 yd B yd 70' 32' 68 yd 11 '11 yd ydA ball rolls horizontally off the edge of a tabletop that is 1.40 m high. It strikes the floor at a point 1.32 m horizontally away from the table edge. (Neglect air resistance. (a) How long was the ball in the air? (b) What was Its speed at the instant it left the table? m/s Submit 0ncuorA firework is shot out of a cannon 400 meters above ground at a speed of 30 m/s at a launch angle of 20 degree. what is the max height?
- A cannonball is shot from the edge of a 20-m-high vertical cliff with an initial speed of 50 m/s at an angle of 40o above the horizontal. Assume that the ground at the bottom of the cliff is flat and level. What will be the velocity of the cannonball in rectangular components (vx, Vy) when it hits the bottom? (See the diagram below.) Assume that g = 9.8 m/s? Vo = 50 m/s Vo. 400 Cannonball 20 m X a. (42.0 m/s, 21.0 m/s) b. (38.3 m/s, 37.7 m/s) O c. (25.0 m/s, 12.5 m/s) d. (34.8 m/s, 17.1 m/s) e. (40.0 m/s, 30.5 m/s)a fish swimming in a horizantal plane has velocity vi=(4.00i+1.00j) m/s at the point in the ocean ehere the position relative to a certain rock is ri = (10.0i -4.00 j) m. after the fish swims with constant accleration for 20.0 s its velocity v=(20.0i-5.00j) m/s (a) what are the components of the accleration of the fish (b) what is the direction of its accleration with respect to unit vector i (c) if tthe fish maintain constant accleration where is it at t=25.0 s and in what direction isit movingSofia is playing a game with her friend, Kara, where she throwsM&M candies at Kara and Kara catches the M&M’s in hermouth. They begin standing 1.75 meters apart from eachother. Sofia throws the M&M at an angle of 60 degrees abovethe horizontal with a speed of 4.13 m/s. Kara’s mouth is145 cm above the ground when she catches the M&M. Whatheight above the ground did the M&M leave Sofia’s hand?Hint: Remember, even though the motion in the horizontaldirection is independent of the motion in the vertical direc-tion, they share the same time.