time. Inciuu d. How far from the base of the building does the ball il 28. A b c
ID: 1582707 • Letter: T
Question
time. Inciuu d. How far from the base of the building does the ball il 28. A b c. Draw a graph of v, the time. Include units on both axes. ground? all with a horizontal speed of 1.25 m/s rolls off a bench 1.00 m above the f a. How long will it take the ball to hit the floor? b. How far from a point on the floor directly below the e oor. dge of ingArthur's knights use a catapult to launch a rock from moat. The rock is launched at a speed of 25 m/s and an angle of launched rock hit the ground? the bench will the ball land? 0- 29 their vantage point on top of the castle wall, 12 m above the 30° above the horizontal. How far from the castle wall does the table. Sphere A is launched with an initial speed of 5.0 m/s. b. What are the distances that each travels from the edge of the 31.) ill A rifle is aimed horizontally at a target 50 m away. The bullet 30. Two spheres are launched horizontally from a 1.0-m-high Sphere B is launched with an initial speed of 2.5 m/s. a. What are the times for each sphere to hit the floor? table? hits the target 2.0 cm below the aim point. a. What was the bullet's flight time? b. What was the bullet's speed as it left the barrel? 32. Il A gray kangaroo can bound across a flat stretch of groun BI0 with each jump carrying it 10 m from the takeoff point. If th kangaroo leaves the ground at a 20° angle, what are its (a) take off speed and (b) horizontal speed? 3On the Apollo 14 mission to the moon, astronaut Alan Shep ard hit a golf ball with a golf club improvised from a tool. ThExplanation / Answer
29) given
h0 = 12 m
v = 25 m/s
theta = 30 degree
let the horizontal distance is x
Now , using equation of trajectory
y = x * tan(theta) - .50 * g * x^2/(u * cos(theta))^2
0 = 12 + x * tan(30 degree) - 9.8 * 0.50 * x^2/(25 * cos(30 degree))^2
solving for x
x = 71.3 m
the horizontal distance is 71.3 m
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