4. There are two frogs named Eroggy and Jumpy. They jumped from the top of avertical cliff. Froggy just drops and reaches the ground in 3.50 s, while Jumpy jumpshorizontally ((bida bida siya, char! Hahall with an initial speed 95 cm/s.a. How far from the base of the cliff will Jumpy hit the ground?b. How high is the vertical cliff?c. If Jumpy jumps with an angle of 30 degrees with respect to the horizontal, whatshould be its initial velocity for it to land on the same spot as he did when hejumped horizontally?

a) since initial velocity in vertical direction is zero for both Froggy & Jumpy. So time taken…

Answered: 4. There are two frogs named Eroggy,…

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)...

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While standing on a bridge 30.0m above the ground, you drop a stone from rest. When the stone has fallen 3.20, you throw a second stone straight down. What initial velocity must you give the second stone if they are both to reach the ground at the same instant? Take the downward direction to be the negative direction a.-22 m/s b.-11 m/s c. -40 m/s d. 4 m/s e. 16 m/s
3. A jet plane has a takeoff speed of Vtakeoff = 60 m/s and can move along the runway at an average acceleration of 2.0 m/s². The runway is 1.5 km. a. Write out the 3 Kinetic equations. 2. v2-U2= Jas 3.5=uttata2 b. Write out the values of initial position, initial velocity, and acceleration. initial position uloity- a: 0.2m/s init.al aueleradion- How many seconds will it take for the plane to reach takeoff speed? С. d. How far will the plane have to travel to get to takeoff speed? e. will the plane be able to get to 60 m/s before it gets to the end of the runway?
7. A feather is dropped on the moon from a height of 1.40 meters. The acceleration of gravity on the moon is 1.67 m/s?. Determine the time for the feather to fall to the surface of the moon. a. 2.29 s b. 1.29 s. c. 1.29 m d. 0.29 s. a C d
A small object is given an initial downward velocity of 3 m/s. a. What is its final velocity if it falls freely for 5 seconds? b. What is its displacement from the initial position after 5 seconds? c. How far did it travel during the 4th second of its fall?
at its highest point? 19. A ball thrown vertically upwards would have an acceleration of b. 1 m/s? c. 9.8 m/s? d. -9.8 m/s? a. 20. A ball thrown vertically upwards would have a speed of b. 1 m/s at its highest point? c. 9.8 m/s d. -9.8 m/s a.
A hot air balloon flying horizontally at a velocity of 50m/s and at an altitude of 475 meters when one if its sandbags falls off. A. How long (in seconds) does it take the sand bags to reach the ground? B. What horizontal distance (in meters) will the bag travel before it strikes the ground?
A ball is thrown horizontally from a cliff of height 90 meters with an initial speed of 45 m/s. A. How far from the base of the cliff will it strike the ground? B. What is its vertical component of velocity when it strikes the ground? C. What is its speed when it strikes the ground?
A spring gun that is mounted at the edge of a 2.0-m-high table launches a steel ball at an angle of 230 above the horizontal with an initial speed of 7.0 m/s. What is the total time of flight of the steel ball? (Assume that g = 9.81 m/s2.) a. 0.80 s b. 0.60 s c. 0.40 s d. 1.0 s e. 1.2 s
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A small rocket is launched straight up. When at height of 5.0km and velocity of 200 m/s. It releases its booster and enters free fall. What is the maximum height, above the ground, the rocket attains. A. 2040m B. 5000m C. 7040m
A man threw a rock towards the sea from a cliff that is 20.0 m tall. If the rock was released 30.0° above the horizontal with an initial velocity of 6.0 m/s, A. What is the maximum height reached by the projectile? B.Determine its total time of flight. C.At what horizontal distance from the cliff does it attain its maximum height? D. How far from the cliff will the rock hit the sea?
4. Angel starts to move from point O and travels in a straight line with v=2t cm/s and t is the time in seconds after leaving O. The particle comes to rest at P. Calculate a. The value of t at P b. The acceleration at P c. The distance from O to P 5. A body projected upward from the level ground at an angle of 50° with the horizontal has an initial speed of 4 m/s. (. a. How long will it take to hit the ground? b. How far from the starting point will it strike? c. At what angle with the horizontal will it strike? DYNAMICS 1. What weight W is necessary to start the system of blocks shown in Figure moving to the right? The coefficient of friction is 0.10 and the pulleys are assumed to be frictionless. What are the amount and direction of the frictions (Justify your answer 40 kN 60 kN w 20° 4. The blocks are separated by a solid strut which is attached to the blocks with frictionless pins. If the coefficient of friction for all surfaces is 0.20, a. determine the value of horizontal force P…

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