A ball is thrown downward with a speed of 11 ft/s from the top of a 121-foot-tall building. Aftert seconds, its height above the ground is given by s(t) = -22t2 - 11t + 121. (a) Determine how long it takes for the ball to hit the ground. sec (b) Determine the velocity of the ball when it hits the ground. ft/sec

A ball is thrown downward with a speed of 11 ft/s from the top of a 121-foot-tall building. Aftert seconds, its height above the ground is given by s(t) = -22t2 - 11t + 121. (a) Determine how long it takes for the ball to hit the ground. sec (b) Determine the velocity of the ball when it hits the ground. ft/sec

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

A plane drops a package of emergency rations to a stranded party of explorers. The plane is traveling horizontally at 40.0 m/s at 100 m above the ground. a) Find the time of flight in air for the package before it hits the ground. b) where the package strikes the ground relative to the spot it was dropped (the distance L). c) the velocity of the package just before it hits the ground.
A potato is launched vertically upward with an initial velocity of 139 ft/s from a potato gun at the top of an 85-foot-tall building. The distance in feet that the potato travels from the ground after t seconds is given by s(t) 36t + 150t + 2. (1) Find the velocity of the potato after 0.5 s ft/s (ii) Find the speed of the potato at 0.5 s ft/s (iii) Determine when the potato reaches its maximum height%3D (tv) Find the acceleration of the potato at 0.5 s ft/s²
Bob hits a tennis ball upward with a velocity of Vo= 30 y m/s from a height of 1 meter above the ground. a) Find the velocity of the ball after 2.5 seconds (Answer: 5.5y m/s ) b) Find the position of the ball at this time (Answer: 45.4y m ) c) Plot acceleration, velocity, and position vs time.
compute the average
A ball is shot vertically upward on another planet. The position of the ball moving along the y-axis depends on the time according to the equation: m. у %3D (10.0т) + (25.0"")t — (3.50 m Determine the velocity of the ball just before it hits the ground. s2 S
A ball is thrown up in the air with an initial velocity of 73 m/s upward. How long does it take the ball to return to the ground? sec.
1. a) A ball is thrown upward with a speed of 5ms-! from a top of 100m building as shown in Fig. Q1(a). One second later a ball B is thrown upward with a speed of 20ms-1 from the ground. Calculate the time after ball A is thrown and the height from the ground when the two balls meet. -1 5ms" A 20ms Fig. Q1(a) 100m
A skydiver falls d1=355m in t1=8.7s before opening her parachute. After the chute opens, she falls an additional d2=780m in t2=116s. Calculate the skydiver’s average speed, v avg in meters per second, during the entire fall.
A ball is launched from a 10.0 m building with an initial speed of 15.0 ?/?. If the ball’s speed when it reaches its maximum height is 1/3 its speed when it is at half its maximum height, determine ball’s launch angle and the ball’s angle at impact. This is all the information i was given!
During a test, a rocket travels upward at Va = 60 m/s and when it is Sa = 20 m from the ground its engine fails. Determine the maximum height Sb reached by the rocket and its speed just before it hits the ground. use 2 decimal places.
A stone is thrown vertically upward with a speed of 60 ft/s from a bridge. On the way down, the stone just misses the bridge and falls into the water 5.0 sec after having been thrown upward. Find the height of the bridge above the water.
A ball is thrown from an initial height of 4 feet with an initial upward velocity of 29 fus. The ball's height h (in feet) after t seconds is given by the following. h-4+291-167 Find all values of t for which the ball's height is 16 feet. Round your answer(s) to the nearest hundredth. (If there is more than one answer, use the "or" button.) initial height ground - seconds O-O