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A boy throws a ball in a train moving at a speed of 18 kmph with a velocity of 15√2 m/s at an angle of 45 to horizontal in the direction of motion of train. The angle with which it strikes the plane of projection w.r.t. an observer watching from ground near by to train

Mayank Vats , 8 Years ago

Grade 12th pass

2 Answers

Deepak Saxena

-18 kmph=5 m/s

-v(x)=15+5=20{velocity along x before collision}

-v(y)=-15{velocity along y before collision is same as u(y) with opposite sign}

-now tan(Q)=v(y)/v(x)=15/20=3/4

so answer is 37 degrees

Last Activity: 8 Years ago

Basu

-18 kmph=5 m/s

-v(x)=15+5=20{velocity along x before collision}

-v(y)=-15{velocity along y before collision is same as u(y) with opposite sign}

-now tan(Q)=v(y)/v(x)=15/20=3/4

so answer is 37 degree

Last Activity: 4 Years ago

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Mechanics> A boy throws a ball in a train moving at ...

A boy throws a ball in a train moving at a speed of 18 kmph with a velocity of 15√2 m/s at an angle of 45 to horizontal in the direction of motion of train. The angle with which it strikes the plane of projection w.r.t. an observer watching from ground near by to train

Mayank Vats , 8 Years ago

Deepak Saxena

Basu

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