An inquisitive physics student and mountain climber climbs a 52.0 m cliff that overhangs a calm pool of water. he throws (not drops) two stones vertically downward, 1.00 s apart, and observes that they cause a single splash. the first stone has an initial speed of 2.05 m/s downward. hint: because the motion is only in the downward direction, choose the positive y-axis to point downward.(a) how long after release of the first stone do the two stones hit the water? (b) what initial velocity must the second stone have if they are to hit simultaneously? (downward)(c) what is the speed of each stone at the instant the two hit the water? first stone (downward)second stone (downward)

Part a)

Part b)

Part c)

Explanation:

Part a)

as we know that speed of the stone is 2.05 m/s

displacement of the stone is 52 m downwards

now we can use kinematics

Part b)

Since second stone is projected downwards with speed v after time t = 1 s

so relative separation between two stones is given as

so now we can say that if both stone hit the water simultaneously so here second stone will approach 1st atone after t = 3.06 - 1 = 2.06 s

so we have

here v1 is the speed of first stone after t = 1 s

now we will have

Part c)

speed of first atone when it hit the water

speed of 2nd stone when it will hit the water

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right

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.