Responder:
<h2>D. 1.5m / s²
</h2>
Explicación:
Usaremos la segunda ley de movimiento de Newton para resolver esta pregunta. De acuerdo con el teorema
es la suma de las fuerzas que actúan sobre el cuerpo a lo largo de la horizontal. Las dos fuerzas son la fuerza móvil (Fm) y la fuerza de fricción (Ff).
Fm = 20 N y Ff = 5 N
m es la masa del cuerpo = 10 kg
El parámetro requerido es cuál es la aceleración del cuerpo a lo largo de la horizontal.
De la ecuación 1;
Por lo tanto, la aceleración del carro es de 1.5 m / s²
Answer:
The amount of potential energy stored in the magnetic field depends on both the strength of the magnet and the distance that another magnet or magnetic object is from it. ...
Explanation:
All objects have a gravitational force, no matter how small, but only some objects such as iron objects can have a magnetic force.
I think so but am not sure
Answer:
v_f = 0.87 m/s
Explanation:
We are given;
F_avg = -17700 N (negative because it's backward)
m = 117 kg
Δt = 5.50 × 10^(−2) s
v_i = 7.45 m/s
Now, formula for impulse is given by;
I = F•Δt = - 17700 x 5.50 × 10^(−2) = - 973.5 kg.m/s
From impulse momentum theory, we know that;
Change in momentum of particle is equal to impulse.
Thus,
Δp = I = m•v_f - m•v_i
Thus,
-973.5= 117(v_f - 7.45)
Thus,
-973.5/117 = (v_f - 7.45)
-8.3205 + 7.45 = v_f
v_f = - 0.87 m/s
We'll take absolute value as;
v_f = 0.87 m/s
Answer:
6621.6 Joule
0.46525
Explanation:
F = Force = 356 N
s = Displacement = 18.6 m
m = Mass of block = 78 kg
Work done
The work done by the horizontal force is 6621.6 Joule
The coefficient of friction between the block and the rough surface is 0.46525
