A tennis player tosses a tennis ball straight up and then catches it after 2.00 s at the same height as the point of release. (a) What is the acceleration of the ball while it is in flight? (b) What is the velocity of the ball when it reaches its maximum height? Find (c) the initial veloc-ity of the ball and (d) the maximum height it reaches. P 2.59 A student throws a set of keys vertically upward to his fraternity brother, who is in a window 4.00 m above. The brother's outstretched hand catches the keys 1.50s later. (a) With what initial velocity were the keys thrown? (b)? What was the velocity of the keys just before they were caught? P 2.68 The driver of a truck slams on the brakes when he sees a tree blocking the road. The truck slows down uniformly with an acceleration of -5.60 m/s2 for 4.20 s, making skid marks 62.4 m long that end at the tree. With what speed does the truck then strike the tree? P 2.75 A stuntman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 10.0 m/s, and the man is initially 3.00 m above the level of the saddle. (a) What must be the horizontal distance between the saddle and the limb when the man makes his move? (b) How long is he in the air?
A tennis player tosses a tennis ball straight up and then catches it after 2.00 s at the same height as the point of release. (a) What is the acceleration of the ball while it is in flight? (b) What is the velocity of the ball when it reaches its maximum height? Find (c) the initial veloc-ity of the ball and (d) the maximum height it reaches. P 2.59 A student throws a set of keys vertically upward to his fraternity brother, who is in a window 4.00 m above. The brother's outstretched hand catches the keys 1.50s later. (a) With what initial velocity were the keys thrown? (b)? What was the velocity of the keys just before they were caught? P 2.68 The driver of a truck slams on the brakes when he sees a tree blocking the road. The truck slows down uniformly with an acceleration of -5.60 m/s2 for 4.20 s, making skid marks 62.4 m long that end at the tree. With what speed does the truck then strike the tree? P 2.75 A stuntman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 10.0 m/s, and the man is initially 3.00 m above the level of the saddle. (a) What must be the horizontal distance between the saddle and the limb when the man makes his move? (b) How long is he in the air?
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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I am confused on p 2.68
Transcribed Image Text:A tennis player tosses a tennis ball straight up and then catches it after 2.00 s at the same height as the
point of release. (a) What is the acceleration of the ball while it is in flight? (b) What is the velocity of the
ball when it reaches its maximum height? Find (c) the initial veloc-ity of the ball and (d) the maximum
height it reaches.
P 2.59
A student throws a set of keys vertically upward to his fraternity brother, who is in a window 4.00 m
above. The brother's outstretched hand catches the keys 1.50s later. (a) With what initial velocity were
the keys thrown? (b)? What was the velocity of the keys just before they were caught?
P 2.68
The driver of a truck slams on the brakes when he sees a tree blocking the road. The truck slows down
uniformly with an acceleration of -5.60 m/s2 for 4.20 s, making skid marks 62.4 m long that end at the
tree. With what speed does the truck then strike the tree?
P 2.75
A stuntman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The
constant speed of the horse is 10.0 m/s, and the man is initially 3.00 m above the level of the saddle. (a)
What must be the horizontal distance between the saddle and the limb when the man makes his move? (b)
How long is he in the air?
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