A boy throws a ball in air at 60° to the horizontal along a road with a speed of 10 m/s (36km/h). Another boy sitting in a passing by car observes the ball. Sketch the motion of the ball as observed by the boy in the car, if car has a speed of (18km/h). Give explanation to support your diagram.

This is a Short Answer Type Questions as classified in NCERT Exemplar

Explanation – The boy throws the ball at an angle of 60.

Horizontal component of velocity 4cos $?$ = 10cos60

=10 (1/2)

=5m/s.

so horizontal speed of the car is same, hence relative velocity of car and ball in the horizontal direction will be zero.  

<p>This is a Short Answer Type Questions as classified in NCERT Exemplar</p><p><strong>Explanation</strong> – The boy throws the ball at an angle of 60.</p><div><div><picture><source srcset="https://images.shiksha.com/mediadata/images/articles/1745403060phpdJLFDs_480x360.jpeg" media=" (max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/articles/1745403060phpdJLFDs.jpeg" alt="" width="277" height="143"></picture></div><div><div><div><p>Horizontal component of velocity 4cos<span contenteditable="false"> <math> <mi>? </mi> </math> </span>= 10cos60</p><p>=10 (1/2)</p><p>=5m/s.</p><p>so horizontal speed of the car is same, hence relative velocity of car and ball in the horizontal direction will be zero.&nbsp;&nbsp;</p></div></div></div></div>

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