That's called the ' NET ' force acting on the object.
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:
F=ma where F is the force, m is the mass of object and a is acceleration
Initial mass is 13000 Kg
Final mass=1300-(66*7)=12538 Kg
where and are initial and final mass respectively, and are initial and final acceleration respectively
By substitution
Answer:d
Explanation:
Eiffel tower is made up of puddling of cast iron and trusses to provide fire-resistant material. Around 7000 metric tons of puddling iron is used to construct the Eiffel Tower. The structure composed of four large arched legs, upright on masonry columns that joined to become one.
Effiel tower uses the criss-cross beams structure called trusses which provide strength to the structure. The strength comes from the inherent stability of triangular structures.
<span>The load is the part that converts electrical energy to another form of energy
Examples of loads include electrical devices such as light bulbs which convert electrical energy to light energy or fans which convert electrical energy to kinetic energy. Loads are essential in any circuit as they enable the circuit to perform a useful task.</span>