Question

Choose the correct option.                                        02

1.    What type of force can change the state of an object ?

    a)  Balanced force        b) Unbalanced force        c) Both a and b

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2.    Force = mass  x  ______

    a) velocity            b) displacement         c) acceleration

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3.   What is the momentum of an object of mass m moving with a velocity v?

    a) mv2                b) ½ mv2            c)  mv

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4.    An object of mass 3 Kg is sliding with a constant velocity of 6 m/s on a frictionless horizontal table. The force required to keep the object moving with the same velocity is __________.

    a) 32 N            b) zero            c) 2 N

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Q.2    If a net horizontal force of 130 N is applied to a person with mass 60 Kg who is resting on the edge of a swimming pool, then what will be the acceleration  produced?                                        01

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Q.3.     Force acts on an object of mass 4 Kg and changes its velocity from 10 m/s to 20 m/s in 5s. Find the magnitude of force.                    02

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Q.4    Which would require a greater force accelerating a 5 kg of mass at 8 m/s or 7 kg of mass at 3 m/s?                                     02

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Q.5    Find the recoil velocity of a gun having mass equal to 5 Kg, if a bullet of 25 g acquires the velocity of 500 m/s after firing from the gun.              03

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Answer 1

Answer:

5 answer is correct

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