4.9 t = 20sin45
x = t* 20cos45
2nd player must go 60 - x in the same amount of time you found.
A player kicks a football at an angle of 45 degree with initial speed of 20 metre per second a second player on the goal line 60 metre away in the direction of a kick start training to receive the ball at that instant find the constant speed of the second player with which he should run to catch the ball before he hit the ground
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