xcm = position of center of mass of the fragments
xA = position of first fragment relative to launch point = 18 m
mA = mass of first fragment = 1 kg
xB = position of second fragment relative to launch point = 32 m
mB = mass of second fragment = 1.5 kg
Location of center of mass is given as
xcm = (mA xA + mB xB)/(mA + mB) = ((1) (18) + (1.5) (32))/(1 + 1.5) = 26.4 m
X = horizontal range of the projectile when no explosion take place = xcm = 26.4 m
t = time of flight = 6 sec
Consider the motion along the horizontal direction :
X = horizontal range of the projectile when no explosion take place = xcm = 26.4 m
t = time of flight = 6 sec
vox = component of velocity along x-direction
using the equation
X = vox t (since no acceleration along x-direction)
26.4 = 6 vox
vox = 4.4 m/s
Consider the motion along the vertical direction :
Y = displacement = 0 m
voy = component of velocity along y-direction
ay = acceleration = - 9.8 m/s2
t = time of flight = 6 sec
using the equation
Y = voy t + (0.5) ay t2
0 = voy (6) + (0.5) (- 9.8) (6)2
voy = 29.4 m/s
speed of launch is given using Pythagorean theorem as
vo = sqrt(vox2 + voy2) = sqrt((4.4)2 + (29.4)2) = 29.73 m/s
angle is given as
= tan-1(voy/vox) = tan-1(29.4/4.4) = 81.5 deg
Please look at the answers below before solving! Answer: a) v0 = 29.7 m/s Theta =...
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