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# M1 Question Help. Trajectory/Projectiles Watch

1. Hi guys I need help with this question.

A football is kicked with speed 31 ms^-1at an angle of 20° to the horizontal. It travels towards the goal which is 50 m away. The height of the crossbar of the goal is 2.44 m

Does the ball go over the top of the crossbar? Justify your answer.

2. (Original post by WorkHardNow)
Hi guys I need help with this question.

A football is kicked with speed 31 ms^-1at an angle of 20° to the horizontal. It travels towards the goal which is 50 m away. The height of the crossbar of the goal is 2.44 m

Does the ball go over the top of the crossbar? Justify your answer.

You need to find the vertical displacement when the horizontal displacement is 50m.

Use

where x=horizontal displacement, t=time, u =speed of projection, y=vertical displacement and theta is the angle of projection.

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