Answer:
950.7 N
Explanation:
m1 = 640kg
m2 = 490kg
k = 8.1 kN/m
the spring is compressed by 5.1cm
5.1/100 = 0.051m
F = kx
F = 8100 * 0.051
F = 413.1 N
F is the force of the small crate.
F(small) = ma
431.1 = 490a
a = 431.1/490
a = 0.84 m/s^2
The acceleration for the smaller crate is the same for the large create.
F(large) = ma
= 640 * 0.84
= 537.6N
Total force = F(small) + F(large)
= 413.1 + 537.6
= 950.7N
Answer:
impact- equal
impulse- equal
momentum- equal
acceleration- the empty cart
Answer: The average velocity will be 0 m/s.
Explanation:
Average velocity is defined as the fraction of displacement and total time.
In the given question, it states that the person stops at the same point from where it started, which means that the displacement of this person is 0 meters.
Therefore, the average velocity becomes:
Hence, the average velocity will be 0 m/s.
ethyl alcohol
water
ammonia
Potassium chloride
To find the vector that is equivalent to a vector of 12 Newtons at 75 degrees south of west, we need to determine the direction and magnitude of the equivalent vector.
The equivalent vector will have the same magnitude of 12 Newtons but a direction that is 180 degrees opposite to the given vector.
The given vector is 75 degrees south of west, which means it is pointing towards the south but slightly to the west.
Therefore, the direction of the equivalent vector will be 75 degrees north of east (opposite direction).
Among the given options:
a) 12 N at 15 degrees west of south - This is not the correct direction.
b) 12 N at 15 degrees south of east - This is not the correct direction.
c) 12 N at 15 degrees north of east - This is the correct direction.
d) 12 N at 15 degrees south of west - This is not the correct direction.
Therefore, the vector that is equivalent to the given vector is option c) 12 N at 15 degrees north of east.
B. frictional
C. centrifugal
D. gravitational
Answer:
frictional
Explanation: