Answer:
c
motorcycle, telephone, piano, lawn mower
Answer:
A) m = 1600 kg
, B) p = 3.2 10⁴ kg m / s
, C) Δp = - 3.2 10⁴ kg m / s
D) t = 51.6 s
Explanation:
A) They indicate the weight of the vehicle W = 15680 N
weight is the attraction of the earth on a body
W = m g
m = W / g
m = 15680 / 9.8
m = 1600 kg
B) The momentum is defined by
p = m v
p = 1600 20
p = 3.2 10⁴ kg m / s
C) the moment change is
Δp = p_{f} -p₀
as the vehicle stops the final speed is zero and therefore the moment is zero
ΔP = 0 - p₀
Δp = - 3.2 10⁴ kg m / s
D) Let's use Newton's second law
F = m a
a = F / m
a = 6.2 102/1600
a = 0.3875 m / s²
Now we can use kinematics, note that as the vehicle stops, the relationship must be opposite to the speed
v = v₀ - a t
v = 0
0 = v₀ - a t
t = v₀ / a
t = 20 / 0.3875
t = 51.6 s
Answer:
Explanation:
Given
mass of ball is m
initial velocity of ball is 
Final velocity of ball is 
Impulse is the change in momentum of an object when an external force is applied for a given interval of time.
Initial momentum 
Final momentum 
The Wavelength is the distance between the same points on two adjacent (neighbouring) disturbances (e.g. from crest to crest or from compression to compression) i.e. one full cycle of the wave.
Answer:
Statement A=3.5504m²
Statement B=3.57576m²
Explanation:
The area of a rectangle is gotten by multiplying the length of the rectangle by the width of the rectangle which gives us the surface area which the rectangle covers. For statement A, I multiplied 2.536 by 1.4 and for statement B, I multiplied 2.536 by 1.41
