Answer:
S = 11488.42 m
Explanation:
Given,
The speed of the jet, v = 0.74 Mach
= 253.82 m/s
The altitude of the jet, h = 10000 m
Since the jet is travelling horizontally, the vertical component of velocity Vy = 0
The equation for a projectile projected from a height h is given by,
S = Vx [Vy + √(Vy² +2gh)] / g
Since Vy = 0
S = Vx √(Vy² +2gh) / g
= 253.82 x √(2 x 9.8 x 10000) / 9.8
= 11488.42 m
Hence, the humanitarian aid package should be delivered ahead of distance, S = 11488.42 m
Answer:
We know that the acceleration of the particle is defined as

Since it is given that

Now by definition of velocity we have

Integrating on both sides we get

Applying values we get

To find the constant we note that at t=1 the particle is at x=12 Thus applying values in the above equation we get

Explanation:
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Answer:
Part a)

Part b)

Explanation:
Force applied by the student on the box is 80 N at an angle of 25 degree
so here two components of the force on the box is given as




now in vertical direction we can use force balance for the box to find the normal force on it



now kinetic friction on the box opposite to applied force due to rough floor is given as


now the net force on the box in forward direction is given as


now the acceleration of the box is given as


Part b)
when box is pulled up along the inclined surface of angle 10 degree
now the two components of the force will be same along the inclined and perpendicular to inclined plane


now force balance perpendicular to inclined plane is given as


now the friction force opposite to the motion on the box is given as


now the net pulling force along the inclined plane is given as



now the box will decelerate and it is given as

