Answer:
distance and time
Explanation:
like miles per hour, its the measure of how far something went durind a span of time, hours.
Answer:
Kinetic energy is referred to the energy associated with movement and or motion, thus the only object that is moving would be A boat sailing across the ocean.
Explanation:
Answer:
Mass does not affect the pendulum's swing. The longer the length of string, the farther the pendulum falls; and therefore, the longer the period, or back and forth swing of the pendulum. The greater the amplitude, or angle, the farther the pendulum falls; and therefore, the longer the period.
Explanation:
The wavelength is 1.4 m for the wave with frequency of 250 Hz and speed is 350 m/s.
Answer:
Explanation:
Wavelength is the measure of distance between two consecutive crests or troughs. So it is the distance upto which every particle in a wave can move freely without any collision. So this distance can be found by finding the ratio of speed of wave to the frequency of wave. Thus, it is known that wavelength is inversely proportional to frequency. This is because, as the wavelength will be less, so the number of complete cycles in a given time interval will increase and vice versa.
Wavelength = Speed/Frequency
As the speed of wave is given as 350 m/s and the frequency is given as 250 Hz, the wavelength is as follows.
Wavelength = 350/250 = 1.4 m
So the wavelength is 1.4 m for the wave with frequency of 250 Hz and speed is 350 m/s.
Answer:
h = v₀ g / a
Explanation:
We can solve this problem using the kinematic equations. As they indicate that the air does not influence the vertical movement, we can find the time it takes for the body to reach the floor
y =
t - ½ g t²
The vertical start speed is zero
t² = 2t / g
The horizontal document has an acceleration, with direction opposite to the speed therefore it is negative, the expression is
x = v₀ₓ t - ½ a t²
Indicates that it reaches the same exit point x = 0
v₀ₓ t = ½ a t2
v₀ₓ = ½ a (2h / g)
v₀ₓ = v₀
h = v₀ g / a