Find the height from which you would haveto drop a ball so that it would havea speed of 9.0 m/s just before it hits the ground. With free body diagram.

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Q: A force of 190 N is applied to an object of area 6 m2 Calculate the pressure ?

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Q: If a spaceship of proper length 40 m is measured to have a length 30 m, how fast is it moving?

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Q: A ball is dropped from the top of an abandoned well. Exactly 6 seconds later, the sound of the bal…

A: initial velocity of the ball = 0 mslet the time taken by the ball to fall = t Let the time taken by…

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Q: Problem 3:   A certain heat engine has a power output of 9.5 kW and an efficiency of 21 %. The…

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Q: A radioactive isotope has a​ half-life of about 17 ​years, which means that if it starts with 1 kg…

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”