Answer:
5.52 m
Explanation:
Using the equation;
Vy = Vo sin θ
Where; Vo = 2.25 m/s and θ = 35°
We get;
= 2.25 sin 35°
= 1.29 m/s
Thus; Vy = 1.29 m/s
But a = -9.81 m/s (against gravity)
t = 1.20 s and
y = Vyt + 1/2 at²
where y is the height above the water
= 1.29 × 1.2 + (1/2 × -9.81 × 1.2²)
= 1.548 + (-7.0632)
= - 5.5152 m
Thus; the height of the girl above the water is 5.52 m
It is the Wrangell-St.Elias in Alaska.
It is 8,323,148 acres
It was established in December of 1980
Answer:work is force times distance
Explanation:to create a force u need energy and the greater the energy the greater the force is applied to an object.
By definition, we have that the gravitational force is given by:
Where,
G: gravitational constant
m1: mass of object number 1
m2: mass of object number 2
r: distance between both objects.
Therefore, for the gravitational force to increase, the following conditions must be met:
1) Increase the mass of the objects so that the numerator of the equation is greater.
2) Decrease the distance between the objects so that the denominator of the equation is smaller.
Answer:
A change that will always result in an increase in the gravitational force between two objects is:
increasing the masses of the objects and decreasing the distance between the objects
Answer:
167.354 m
Explanation:
We are given;
The mass of the car with bad shock;
m = 1500 kg
The distance at which the car sinks; x =
6 cm = 6 × 10^(−2) m
The total mass of 4 people; m_t = 11 kg
The total speed in the highway; V = 65
mph = 29.058 m/s
The spring's constant can be calculated from the formula;
F = Kx
F is also equal to mg.
Thus;
m_t × g = Kx
K = (m_t × g)/x
K = (11 × 9.81)/(6 × 10^(−2))
K = 1798.5 N/m
Mass of car and four people;m_(c+t) = 1500 + 11 = 1511 kg
Thus, the period cam be calculated from the formula;
T = 2π√((m_c+t)/k)
T = 2π√(1511/1798.5)
T = 5.759 s
the distance between adjacent bumps is calculated from;
Velocity = distance/time
Distance = velocity x time
Distance = 29.058 × 5.759
Distance = 167.354 m
