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The fist ball is thrown up ward with avelocity of 20m/s at the same instant. The second ball is dropped at 40m hight from the first ball at what time the two ball collide each other?

A fishing line will break when the tension in it reaches 15 N. A 3.1 m length of it is used to tie a model aeroplane of mass 280 g to a post so it goes round in circles. What is the fastest speed the aeroplane can reach before the line breaks. Give your a...

A toy car moves around a loop-the-loop track. The loop is 0.5 m high.What is the minimum speed of the car at the top of the loop for it to stay on the track?

A simple pendulem is made from a bob of mass 0.040 kg suspended on a light string of length 1.4 m.keeping taut,the pendulemis pulled to one side until it has gained a height of 0.10 m.calculte a) the total energy of the oscillation b) the amplitude of the...

A petrol engine raises 200 kg of water in a well from a depth of 7 m in 6 s. Show that the engine is developing about 2.33 KW of power

Complete The Sentences With The Given Words. Temperature, Protect, 1, Areas With Trees and Grass Have Fresh Air And Cool ..............

Plese Give Me Short Note For English Grammar

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