Answer:
A wedge is a machine that consists of two inclined planes, giving it a thin end and thick end. A wedge is used to cut or split apart objects. Force is applied to the thick end of the wedge, and the wedge applies force to the object along both of its sloping sides. This force causes the object to split apart
Answer:
Psychology is theoretically diverse.
Explanation:
The theme, 'Psychology is theoretically diverse' means that the psychology has many various views and points. This is because when people make many observations they can go several and many different ways with these observations. This is why Psychology has many perspectives. The differing perspectives provide complete understanding of the human behavior more effectively.
Hence, different perspectives of the three professionals mentioned illustrate this theme.
Answer:
Explanation:
Standard International (SI) units of measurement is the acceptable global units of measure for physical quantities. they are majorly fundamental units.
Thus,
(a) The mass of a sport car is measured in kilograms (kg).
(b) The distance from your home to your school is measured in meters (m).
(c) The mass of an elephant is measured in kilograms (kg).
(d) The diameter of a large pizza is measure in meters (m).
(e) A semester at your school is measured in weeks.
(f) The time for light to travel from the sun to the earth is expressed in seconds (s).
(g) The time it takes to fly from New York to California is in seconds (s).
(h) Your mass is measured in kilograms (kg).
(i) The length of the Prime Meridian is expressed in meters (m).
(j) Your height is expressed in meters (m).
Answer:
A) a = 7.89 m/s²
B) a = 3.51 m/s²
C) 4.38 m/s²
D) Frictional force
E) F_f = 5552.83 N
Explanation:
A) Formula for Force is;
F = ma
Where;
m is mass
a is acceleration
We are given;
F = 10,000 N
m = 1267 kg
Thus;
10000 = 1267a
a = 10000/1267
a = 7.89 m/s²
B) We are told the car covers 394.6 m in 15 seconds.
Using Newton's third equation equation of motion, we can find the actual acceleration.
s = ut + ½at²
u is zero since the object began from rest.
Thus;
S = ½at²
394.6 = ½ × a × 15²
a = 394.6 × 2/225
a = 3.51 m/s²
C) difference in accelerations = 7.89 - 3.51 = 4.38 m/s²
D) The force that caused the difference in acceleration is frictional force
E) To find the magnitude of the force that caused the difference in acceleration, we will use the formula;
F - F_f = ma
F_f = F - ma
Where F_f is the frictional force
Thus;
F_f = 10000 - 1267(3.51)
F_f = 5552.83 N
Maybe you can split up the questions. I will try to answer your first question.
1. In an elastic collision, momentum is conserved. The momentum before the collision is equal to the momentum after the collision. This is a consequence of Newton's 3rd law. (Action = Reaction)
2. Momentum: p = m₁v₁ + m₂v₂
m₁ mass of ball A
v₁ velocity of ball A
m₂ mass of ball B
v₂ velocity of ball B
Momentum before the collision:
p = 2*9 + 3*(-6) = 18 - 18 = 0
Momentum after the collision:
p = 2*(-9) + 3*6 = -18 + 18 = 0
3: mv + m(-v) = m(-v) + m(v)
the velocities would reverse.
4.This question is not factual since the energy of an elastic collision must also be conserved. The final velocities should be: v₁ = -1 m/s and v₂ = 5 m/s. That said assuming the given velocities were correct:
before collision
p = 10*3 + 5*(-3) = 30 - 15 = 15
after collision:
p = 10*(-2) + 5 * v₂ = 15
v₂ = 7
5.You figure out.
