A tennis ball rolls off the edge of a tabletop 0.800 {\ m m} above the floor and

Question

A tennis ball rolls off the edge of a tabletop 0.800 { m m} above the floor and strikes the floor at a point 1.50 { m m} horizontally from the edge of the table.

Part A
Find the time of flight of the ball.
t =______{ m s}

Part B
Find the magnitude of the initial velocity of the ball.
v =______{ m m/s}


Part C
Find the magnitude of the velocity of the ball just before it strikes the floor.
v =______ { m m/s}

Part D
Find the direction of the velocity of the ball just before it strikes the floor.
heta =_________^circ below the horizontal.

Explanation / Answer

t=(0.8 m*2/9.8)0.4041 s==>x=vox*t1.5/0.40413.7 m/s=vox

vy=voy-g*t=-9.8*0.4041-3.96 m/s==>(3.72+3.962)5.43 m/s=Vfinal

tan-1(-vy/vx)-46.85o

A) 0.4041 s

B) 3.7 m/s

C) 5.43 m/s

D) -46.85o

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