Answer:
532.0725 m
102.17270893 m/s
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
g = Acceleration due to gravity = 9.81 m/s² = g
H = Height of cliff
Distance traveled in 3 seconds
Distance traveled by sound = 2H-44.145 m
The height of the cliff is 532.0725 m
Her speed just before she hits the ground is 102.17270893 m/s
Answer:
0.19
Explanation:
mass of block, m = 40 kg
F = 150 N
Angle make with the horizontal, θ = 60 degree
Let μ be the coefficient of kinetic friction
The component of force along horizontal direction is F Cos θ
= 150 cos 60 = 75 N
As it is moving with constant velocity it mean the acceleration of the block is zero.
Applied force in horizontal direction = friction force
75 = μ x Normal reaction
75 = μ x m x g
75 = μ x 40 x 9.8
μ = 0.19
Thus, the coefficient of kinetic friction is 0.19.
Answer:
Acceleration always refers to a(n) Change in velocity. A change in direction without a change in speed is called velocity.
Explanation:
Let’s use *queue dramatic voice* THE GREAT LAW OF THE CONSERVATION OF MOMENTUM!!!!!
m1v1i + m2v2i = m1v1f + m2v2f
m1v1i - m1v1f = m2(v2f - v2i)
m2 = (m1v1i - m1v1f) / (v2f - v2i)
m2 = [(0.15)(15) - (0.15)(1.2)] / (13 - -22)
Henceforth, my good sire, the mass indeed works out to a fine approximate value of:
m = 0.06 kg
That’s a pretty small tennis ball!
