Questions

A ball is dropped from a height of 49 m, the wind blows horizontally and imparts a constant acceleration of 4.90 ms^-2 to the ball. Choose the correct statement(s).

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Path of the ball is a straight line.

Path of the ball is a curved one.

The time taken by the ball to reach the ground is 3.16 s.

The angle made by the line joining initial and final positions (on ground after 1st strike) of the ball with horizontal is greater than 45o.

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detailed solution

Correct option is A

ux=uy=0,ax=4.9ms−2,ay=9.8ms−2So x=12axt2and y=12ayt2 xy=axay=12So path of the ball is a straight line. Let t be the time taken by the ball to reach ground, then 49=12ayt2⇒t2=10⇒t=3.16stan⁡θ=ayax=2⇒θ=tan−1⁡(2)

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A ball is dropped from a height of 49 m, the wind blows horizontally and imparts a constant acceleration of 4.90 ms-2 to the ball. Choose the correct statement(s).

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

A ball is dropped from a height of 49 m, the wind blows horizontally and imparts a constant acceleration of 4.90 ms^-2 to the ball. Choose the correct statement(s).