(9. THE FOLLOWING QUESTIONS ARE BASED ON THE INFORMATION GIVEN BELOW. The lift of an observatory tower is accelerating upwards with a = 1Im/s, together with a kid inside it. The moment the lift reaches a speed r = 4m/s, the kid lets go of a ball that she has been holding in her hand, at a height L- 2.9 m above the lift floor. As you answer the questions, ignore air resistance and treat the ball as a point-mass. (Take g= 9.8 m/s) A) How long, in seconds does it take the ball t hit the lift floor? Answer: B) What is the total distance travelled by the ball, in meters, from the moment it is released until it hits the floor? Answer

(9. THE FOLLOWING QUESTIONS ARE BASED ON THE INFORMATION GIVEN BELOW. The lift of an observatory tower is accelerating upwards with a = 1Im/s, together with a kid inside it. The moment the lift reaches a speed r = 4m/s, the kid lets go of a ball that she has been holding in her hand, at a height L- 2.9 m above the lift floor. As you answer the questions, ignore air resistance and treat the ball as a point-mass. (Take g= 9.8 m/s) A) How long, in seconds does it take the ball t hit the lift floor? Answer: B) What is the total distance travelled by the ball, in meters, from the moment it is released until it hits the floor? Answer

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

The Scenario Imagine a diver jumping off a spring board that is 10 feet above the water. The board throws the diver up with a upwards velocity of 9 feet per second. That means that if there were no gravity, the diver would keep going up at the rate of 9 feet every second. Fortunately for the diver, there is gravity. Eventually, gravity over comes the force of the diving board and the the diver begins to come down. So over all, the diver is thrown into the air fairly quickly. He slows down until he stops then begins to come back down (slowly at first, then faster and faster until he hits the water). The height of any object like the diver that is projected into the air can be modeled with the following function: h(t) = -16t^2 + v*t + m The Project Pretend that you shoot a stone from a slingshot straight up above your head. Research on the internet about the speed or velocity produced by slingshot and decide on what the initial velocity of your imagined slingshot will be. There will be…
Keep the track tilted at 7∘∘ with the horizontal, at let the cart roll downwards. The length of the track is 75 cm. Starting from zero speed at the top of the track, what will be the speed of the cart as it reaches the bottom? Write your answer in m/s, and ignore friction. Mass of the cart = 250 grams.
A skier, starting from rest, moves from the top of a ramp to the bottom. If the vertical drop is 3.12 meters, what is the speed in m/s of the skateboarder at the bottom of the ramp. (neglect friction). Can you help with a visual aid; and then, explain the mechanics of calculation.
A ball is launched directly upwards from the ground. At max height, the ball has a gravitational potential energy of 200 J. If the ball the ball has a mass of 4 kg, then what was the initial velocity of the ball? Report your answer in units of meters per second (m/s) but only write down the number part.
A man on a motorcycle plans to make a jump as shown in the figure. If he leaves the ramp with a speed of 30.0 m/s and has a speed of 28.4 m/s at the top of his trajectory, determine his maximum height (h) (in m) above the end of the ramp. Ignore friction and air resistance. ורו
The force on a 2 kg object varies with position as shown in fig. below. If the object was initially at rest, find its speed in m/s at x = 2.5 m. (write the answer with three significant figures only). X(m) Answer: (N) (x)d
H1.
A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x<0 and by y = -(x^2)/d for x>0. The value of d is 4.16 m, and x and y are measured in meters as usual. Suppose the block starts from rest on the track, at x = -2.7 m. What will the block s speed be when it reaches x = 0? 8.79 m/s 5.86 m/s 4.14 m/s 2.90 m/s
You drop a 1.40 kg book to a friend who stands on the ground at distance D = 12.0 m below. Your friend's outstretched hands are at distance d = 1.30 m above the ground (see the figure). (a) What is the speed of the book when it reaches her hands? (b) If we substituted a second book with twice the mass, what would its speed be when it reaches her hands? (c) If, instead, the book were thrown down with initial speed 5.90 m/s, what would be the answer to (a)? (a) Number i Units (b) Number i Units
You drop a 2.20 kg book to a friend who stands on the ground at distance D = 11.0 m below. Your friend's outstretched hands are at distance d = 1.40 m above the ground (see the figure). (a) What is the speed of the book when it reaches her hands? (b) If we substituted a second book with twice the mass, what would its speed be when it reaches her hands? (c) If, instead, the book were thrown down with initial speed 4.90 m/s, what would be the answer to (a)? (a) Number Units (b) Number Units (c) Number Units 出

Will give thumbs-up! Solve in 3 decimal places.
A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x<0 and by y = -(x^2)/d for x>0. The value of d is 4.49 m, and x and y are measured in meters as usual. Suppose the block starts from rest on the track, at x = -2.64 m. What will the blocks speed be when it reaches x = 0? 3.90 m/s 2.34 m/s 7.18 m/s 5.52 m/s