RandProbw4q1

#$&*

course Phy 201

9/26 8

A projectile leaves the edge of a table and, while traveling horizontally at a constant 37 cm/s, falls freely a distance of 149 cm to the floor. If its vertical acceleration is 980 cm/s2, how long does it take to fall and how far does it travel in the horizontal direction during the fall?vf^2=v0^2+2*a*'ds

vf^2=0+2*980cm/s^2*149cm

sqrt(vf^2)=sqrt(292040cm^2/s^2)

vf=540cm/s

vAve=(0+540cm/s)/2

vAve=270cm/s

270cm/s='ds/'dt

'dt=149cm/270cm/s

'dt=.55s

'ds=vAve*'dt

'ds=37cm/s*.55s

'ds=20.35cm"

&#This looks very good. Let me know if you have any questions. &#