A cannon on top of a 75 m cliff shoots a cannonball at a velocity of 125 m/s at an angle of 60°. (a) What is the initial velocity in the x and y direction. (b) How long does it take the cannonball to reach it's maximum height? (c) How far does the cannonball travel in the x direction?
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- Figure OQ3.3 shows a birds-eye view of a car going around a highway curve. As the car moves from point 1 to point 2, its speed doubles. Which of the vectors (a) through (e) shows the direction of the cars average acceleration between these two points?A rock is thrown off a cliff at an angle of 53° with respect to the horizontal. The cliff is 100 m high. The initial speed of the rock is 30 m/s. (a) How high above the edge of the cliff does the rock rise? (b) How far has it moved horizontally when it is at maximum altitude? (c) How long after the release does it hit the ground? (d) What is the range of the rock? (e) What are the horizontal and vertical positions of the rock relative to the edge of the cliff at t = 2.0 s, t = 4.0 s, and t = 6.0 s?An object is thrown off the top of a building with velocity 28 m/s at an angle of 32° with respect to the horizontal. It takes 6.2 s for the object to land. (a) How high is the building in meters? (b) What is the horizontal distance that the object travels in meters?
- Suppose I throw a rock horizontally with an initial speed of 30 m/s. Suppose my release point is 2 m above the ground. (a) How long does it take for the rock to hit the ground? (b) How far in the horizontal direction does the rock travel? (c) What is the speed of the rock right before it hits the ground?A rock is thrown horizontally with a speed of 20 m/ s from a vertical cliff of height 25 m. (a) Draw a sketch showing initial velocity of rock and vertical and horizontal displacement. (b) What are x and y components of initial velocity? (c) What are x and y components of acceleration? (d) How long does it take the rock to reach the horizontal ground below? (e) How far will it land from the base of the cliff?From the edge of a high cliff overlooking a flat valley, you shoot a cannonball horizontally over the valley with an initial speed of 120 m/s. If the cliff is 400 m above the valley floor, how far does the cannonball travel in the horizontal direction before landing on the ground?
- A rock is thrown off a cliff at an angle of 51° above the horizontal. The cliff is 145 m high. The initial speed of the rock is 23 m/s. (Assume the height of the thrower is negligible.) (a) How high above the edge of the cliff does the rock rise (in m)? (b) How far has it moved horizontally when it is at maximum altitude (in m)? m (c) How long after the release does it hit the ground (in s)?An inflatable life raft is released from an air plane at 500 m altitude, in level flight, with an air speed of 20 m/s in the horizontal direction. How long before the raft strikes the water? How far from the release point does the raft strike the water?In an amusement park water slide, people slide down an essentially frictionless tube. The top of the slide is 3.2 m above the bottom where they exit the slide, moving horizontally, 1.2 m above a swimming pool. What horizontal distance do they travel from the exit point before hitting the water?
- A cliff of height 910 m in a park .Assume a jumper runs off the cliff with a speed of 5 m/sec at an angle of 100 and enjoys a free fall until he is 150 m above the valley floor, at which time she opens her parachute. How long is the jumper in free fall? (Ignore air resistance) It is important to be as far away from the cliff as possible before opening the chute. How far away from the cliff is the jumper when she opens her chute?a diver jumps from a boat and descends to a depth of 20m. she skirts a coral reef and estimates that she has traveled 30 m. she turns to the right 30 degrees to continue along the reef and swims another 25m at the same depth. how far is she from the boat?A stunt man drives a car at a speed ?⃑1= 20 m/s off anH = 30-m-high cliff. The road leading to the cliff is inclined upward at an angle ?= 10°. (a) How far from the base of the cliff does the car land? (b) What is the car's impact speed? (c) At what angle the car hits the ground? (d) Find the time it takes the car to hit the ground after leaving the cliff? (e) To what maximum height the car reaches to from the cliff? Neglect the air drag and the sizeof the car. Acceleration due to gravity = 9.80 m/s^2.