1. An object is thrown horizontally from the top of a building 4 m above the ground. Is hits the ground 10 Work m away. Vo 4 m (0,0) 10 m a) How many seconds will the object be in flight? b) What should the initial velocity of the object? c) What is the impact speed of the object hitting the ground? d) Write the equations of motion x(t) and y(t) for thex and y positions. 1. a,b) 0.90 sec, 11.1 m/s

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Transcribed Image Text:24 ee31.5 Or S wws bom the dt of 4m (e 3. Os the planet Mars, and ohect s thews om the ground and of 3. Whet is the wht is the maimum heighe wd wwle ae und snd lands the ground is i fight a total speed of the Wht is the spesd of the peopecile at the sop of its path
L. An object is thrown horizontally from the top of a building 4 m above the ground. It hits the ground 10
m away.
Vo
4 m
(0,0)
10 m
a) How many seconds will the object be in flight? b) What should the initial velocity of the object?
c) What is the impact speed of the object hitting the ground?
d) Write the equations of motion x(t) and y(t) for the x and y positions.
1. a,b) 0.90 sec, 11.1 m/s
2 (Speed of a softball). A softball is hit over a third baseman's head with speed v, and at an angle 0 from
the horizontal. Immediately after the ball is hit, the third baseman turns around and runs straight back at a
constant velocity V = 7 m/s, for a time t = 2 s. He then catches the ball at the same height at which it left
the bat. The third baseman was initially L=18.0m from the location where the ball was hit at home plate.
a) What horizontal distance does the ball travel in flight?
b) Find vo of the softball.
c) Find 0.
2. a) 32 m c) 0 = 31.5°
al
DE Spe
ed ytune
D=7 x2 m
D=14m
X=14mm
2 Voy +t x9.0
%3D
Noy <9,8mls
VしVeR-+Vou
bt.
メい18414m
voこ Vie+9
16
X<32m
C/Tume f.te248nt s Sn0
9.8 250-31.5
Vo
c)Tume
Transcribed Image Text:L. An object is thrown horizontally from the top of a building 4 m above the ground. It hits the ground 10 m away. Vo 4 m (0,0) 10 m a) How many seconds will the object be in flight? b) What should the initial velocity of the object? c) What is the impact speed of the object hitting the ground? d) Write the equations of motion x(t) and y(t) for the x and y positions. 1. a,b) 0.90 sec, 11.1 m/s 2 (Speed of a softball). A softball is hit over a third baseman's head with speed v, and at an angle 0 from the horizontal. Immediately after the ball is hit, the third baseman turns around and runs straight back at a constant velocity V = 7 m/s, for a time t = 2 s. He then catches the ball at the same height at which it left the bat. The third baseman was initially L=18.0m from the location where the ball was hit at home plate. a) What horizontal distance does the ball travel in flight? b) Find vo of the softball. c) Find 0. 2. a) 32 m c) 0 = 31.5° al DE Spe ed ytune D=7 x2 m D=14m X=14mm 2 Voy +t x9.0 %3D Noy <9,8mls VしVeR-+Vou bt. メい18414m voこ Vie+9 16 X<32m C/Tume f.te248nt s Sn0 9.8 250-31.5 Vo c)Tume
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