If you know that the initial velocity of the projectile is = 4 m/sec then from t

Question

If you know that the initial velocity of the projectile is = 4 m/sec then from the graph besides determine the time of flight at maximum range The height at maximum range The analysis of the data sheet of the collision of two equal mass steel balls gave the following The value of angle theta is The value of V The conserved quantities in this collision are: Suppose a block is placed on a rough inclined surface relative to the horizontal as shown in Figure The inclined angle is increased until the black starts to move (at theta = 30) Then we decreasing the incline angle slowly until the block moves down the incline with constant speed at The coefficients of static friction mu The coefficient of kinetic friction mu =

Explanation / Answer

QUESTION 1

10) s = vi2 sin(2 ) / g

s = 1.63

tmax = s/vo*cos45

tmax = 0.57

So the answer is correct

11) h = 1/2 g th2  

h = 1/2*9.81*(0.565/2)2

h = 0.39

So the answer is correct

QUESTION 2

12) The angle is correct

13) The speed is correct

QUESTION 3

15) mgsin= mgcos( condition for a block at move constant speed)

tan=

= tan30= 0.577 apprx

So is correct

16)

mgsin= mgcos( condition for a block at move constant speed)

tan=

= tan21= 0.39 apprx

So is correct

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