A bullet of mass 10g travel horizontally at 300m/s, strikes a wooden block of mass 290g which is at rest but free to move on the floor. After the impact the block and the bullet collides and move together and come to rest after travelling 15m on the floor. Find the coefficient of static friction​

50 Newton

Explanation in photo

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c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

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air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.