Serving at a speed of 170 km/h, a tennis player hits the ball at a height of 2.5 m and an angle θ below the horizontal. The service line is 11.9 m from the net, which is 0.91 m high. What is the angle θ such that the ball just crosses the net? Will the ball land in the service box, whose out line is 6.40 m from the net?

Step 1 of 5</p>

We have to find the angle using given data

Given

x=211.9 m

y=2.5-0.9=1.4 m

g=-9.8 m/

v=170 km/h

Step 2 of 5</p>

We have kinematic equation

Step 3 of 5</p>

Use the kinematic equation to find ‘t’

Now find