A box is travelling inside an elevator travelling at uniform acceleration and 5 m/s when the box falls out of the elevator. It takes 1.2 seconds to hit bottom of elevator shaft. a) How long would it take before the elevator reached maximum height? b) How far did the box fall? c) How far did the box fall in 0.2 seconds?

A box is travelling inside an elevator travelling at uniform acceleration and 5 m/s when the box falls out of the elevator. It takes 1.2 seconds to hit bottom of elevator shaft. a) How long would it take before the elevator reached maximum height? b) How far did the box fall? c) How far did the box fall in 0.2 seconds?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter6: Motion In Two Dimensions

Section6.3: Relative Velocity

Problem 27PP

See similar textbooks

Similar questions

To throw a baseball, the pitcher winds up, starting the ball from rest. They then accelerate the ball through a displacement of 3.4 m before releasing the ball at 46 m/s. Question A: Calculate the constant acceleration necessary to achieve this ball velocity. Give your answer in m/s^2 Question B: How many g's is this? (By what factor would you need to multiply Earth's gravity g = 9.8 m/s^2 to achive the same acceleration?
a) To what height will a 450 g soccer ball rise if it is kicked directly upward at 8 m/s? b) Neglecting wind resistance, use your kinematic equations to determine how long does it take for the ball to get to the top of it's trajectory? c) What is the hang time of the ball? Round answers to nearest hundredth.
A drag racer crosses the finish line of a 400 m track with a final speed of 104 m/s. (a) Assuming constant acceleration during the race, calculate the racer's time and the minimum coefficient of static friction between the tires and the road. (b) If, because of bad tires or wet pavement, the acceleration were 30 % smaller, calculate how long it takes to finish the race. HUAWEI P30 lite TRIPLE CAMERA Slide 61
A bungee jumper attains a speed of 35.6 m/s before the tension in the bungee cord begins to slow the jumper down. Once the bungee cord starts developing tension, it takes 6 sec before the tension is great enough to start pulling the jumper up. a) Assuming negligible air resistance, what is the time duration and b) distance of free fall? c) What is the average acceleration of the jumper after the bungee develops tension?
Io, a satellite of Jupiter, is the most volcanically active moon or planet in the solar system. It has volcanoes that send plumes of matter over 500 km high. Due to the satellite's small mass, the acceleration due to gravity on Io is only 1.81 m/s2and Io has no appreciable atmosphere. Assume that there is no variation in gravity over the distance traveled. a)What must be the speed of material just as it leaves the volcano to reach an altitude of 380 km? b)If the gravitational potential energy is zero at the surface, what is the potential energy for a 33 kg fragment at its maximum height (500 km) on Io? c)How much would this gravitational potential energy be if it were at the same height (500 km) above earth?
An object is shot straight upward from sea level with an initial velocity of 450 ft/sec. d.Assuming that gravity is the only force acting on the object, give an upper estimate for.its velocity after 5 sec have elapsed. Use g= 32 ft/sec for the gravitational acceleration. b.Using At= 1 sec, find a lower estimate for the height attained after 5 sec. %3D a. The upper estimate for the velocity after 5 sec is ft/sec. b. The lower estimate for the height after 5 sec is ft.
Physics You are on a mysterious planet with a gravitational acceleration of 2.0 m/s2. If you throw a ball straight upward with a speed of 10 m/s, how long will it take for the ball to return to where it was thrown?
At t = 0, an automobile travelling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.5 m until, at t = 2.20 s, it is travelling east. The car does not alter its speed during the turn. a) What is the speed of the car? b) What is the magnitude of the change in the car's velocity during the turn?c) Find the magnitude of the average acceleration of the car during the turn? d) What is the direction of the average acceleration of the car during the turn?
A rock is thrown from the top of a cliff at a speed of 25 m/s at an angle of 30° above the horizontal. The ball lands on the ground below after 13 s. a) What is the height of the cliff? b) How far from the base of the cliff does the rock land? c) What is the max height of the rock? Remember to include the following when answering these questions: What did you get? (your answer with the correct units and supporting work) How did you get that? (the equation you chose to use to get your answer) Why did you use that? (the concept that supports the use of the equation that you chose to use) Edit View Insert Format Tools Table 12pt v Paragraph BIU MacBook Air DD
Two rocks are thrown horizontally off a 180 m cliff. One rock is thrown with a speed of 10 m/s and the other is thrown with a speed of 20 m/s a) How much time does it take each rock to hit the ground? b) How far from the base of the cliff does each rock land? c) What is the horizontal and vertical speed of each rock when it hits the ground?
A 200 kg man rides in an elevator while standing on a scale. As the elevator rises with a constant acceleration of 6m/s2, what is the reading of the scale? b) As the elevator lowers itself with a constant acceleration of 6m/s2, what is the reading of the scale? c) As the elevator rises with a constant velocity of 2m/s, what is the reading of the scale? d) A 200 kg man rides an elevator while standing on a scale. What is the weight of the man?
a) To what height will a 450 g soccer ball rise if it is kicked directly upward at 8 m/s? b) Neglecting wind resistance, use your kinematic equations to determine how long does it take for the ball to get to the top of its trajectory? c) What is the hang time of the ball? Round answers to nearest tenth.