A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 18.0 below the horizontal. The negligent driver leaves the car in neutral, and unfortunately the emergency brakes are defective. The car rolls from rest down the incline for a distance of 30.0 m to the edge of the cliff, which is 45.0 m above the ocean. Ignore air and road resistance forces. A. . What is the velocity when the car hits the water?

A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 18.0 below the horizontal. The negligent driver leaves the car in neutral, and unfortunately the emergency brakes are defective. The car rolls from rest down the incline for a distance of 30.0 m to the edge of the cliff, which is 45.0 m above the ocean. Ignore air and road resistance forces. A. . What is the velocity when the car hits the water?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter6: Motion In Two Dimensions

Section6.1: Projectile Motion

Problem 1PP

See similar textbooks

Similar questions

A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of vi= 18.0 m/s. The cliff is h = 50.0 m above a body of water as shown in Figure P3.19. (a) What are the coordinates of the initial position of the stone? (b) What are the components of the initial velocity of the stone? (c) What is the appropriate analysis model for the vertical motion of the stone? (d) What is the appropriate analysis model for the horizontal motion of the stone? (e) Write symbolic equations for the x and y components of the velocity of the stone as a function of time. (f) Write symbolic equations for the position of the stone as a function of time. (g) How long after being released does the stone strike the water below the cliff? (h) With what speed and angle of impact does the stone land?
A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of vi = 18.0 m/s. The cliff is h = 50.0 m above a body of water as shown in Figure P4.13. (a) What are the coordinates of the initial position of the stone? (b) What are the components of the initial velocity of the stone? (c) What is the appropriate analysis model for the vertical motion of the stone? (d) What is the appropriate analysis model for the horizontal motion of the stone? (e) Write symbolic equations for the x and y components of the velocity of the stone as a function of time. (f) Write symbolic equations for the position of the stone as a function of time. (g) How long after being released does the stone strike the water below the cliff? (h) With what speed and angle of impact does the stone land? Figure P4.13
A cannon is fired with muzzle velocity of 150 m/s at an angle of elevation = 45°. Gravity = 9.8 m/s2.a) What is the maximum height the projectile reaches?b) What is the total time aloft?c) How far away did the projectile land? (Range)d) Where is the projectile at 10 seconds after firing?
An archer standing on the back of a pickup truck moving at 28m/s fires an arrow straight up at a duck flying directly overhead. The arrow was fired with an initial vertical velocity of 49 m/s relative to the truck. a) for how long will the arrow be in the air? b) how far will the aptruck travel while the arrow is in the air? c) Where, in relation to the "duckless" archer, will the arrow come down? Will the archer have to 'duck'?
A small mailbag is released from a helicopter that is descending steadily at 2.36 m/s. (a) After 3.00 s, what is the speed of the mailbag? v = m/s (b) How far is it below the helicopter? d = (c) What are your answers to parts (a) and (b) if the helicopter is rising steadily at 2.36 m/s?
A skier leaves the end of a horizontal ski jump at 22.0 m/s and falls through a vertical distance of 3.20 m before landing. Neglecting air resistance, (a) how long does it take the skier to reach the ground? (b) How far horizontally does the skier travel in the air before landing?
A football quarterback is moving straight backward at a speed of 1.00 m/s when he throws a pass to a player 20.0 m straight downfield. (a) If the ball is thrown at an angle of 25.0° relative to the ground and is caught at the same height as it is released, what is its initial speed relative to the ground?(b) How long does it take to get to the receiver? (c) What is its maximum height above its point of release?
A lifeguard stands on top of a watch tower at the beach and purposely throws a stone horizontally with a speed of vi=18.0 m/s. The height of the tower is 50.0 m above the ground. a. With what angle of impact does the stone land? b. With what angle of impact does the stone land? c. How long after being released does the stone strike ground? d. With what speed does the stone land?
A rock is thrown off a cliff at an angle of51ºwith respect to the horizontal. The cliff is 110 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 att= 2.0 s,t= 4.0 s, andt= 6.0 s?
4. a,b a big cruise ship dropped anchor off the caribbean island of barbuda. the heavy anchor was released from a height of 54 meters above the water's surface, and it fell at a constant rate. after 35 seconds, the anchor was 9 meters below the water's surface. a) how fast did the anchor drop? b) how long did it take the anchor to reach the water's surface?
A stone is thrown horizontally at a speed of 5.0 m/s from the top of a cliff 78.4 m high. a. How long does it take the stone to reach the bottom of the cliff? b. How far from the base of the cliff does thew stone hit the ground? c. What are the horizointal and vertical components of the stone's velocity just before it hits the ground?
A rock is thrown off a cliff at an angle of 48° above the horizontal. The cliff is 150 m high. The initial speed of the rock is 20 m/s. (Assume the height of the thrower is negligible.) (d) What is the range of the rock (in m)? (e) What are the horizontal and vertical positions (in m) of the rock relative to the edge of the cliff at t = 2.0 s, t = 4.0 s, and t = 6.0 s? (Assume the +x-direction is in the horizontal direction pointing away from the cliff, the +y-direction is up towards the sky, and x = y = 0 at the point from which the rock is thrown.)