Refer to the diagram shown below.
m = 1.0 kg
Let R = resistive force of the water.
The boat accelerates from rest to 0.20 m/s in 0.50 s. Its acceleration is
a = (0.20 m/s)/(0.50 s) = 0.40 m/s²
The driving force on the boat is Fcos(45°) - R. Therefore
(2cos(45°) - R N) = (1 k)*(0.4 m/s²)
1.4142 - R = 0.4
R = 1.0142 N
Answer: The resistive force of the water is 1.0 N (nearest tenth)
Answer:
Energy by definition is the property of matter that involves interactions with molecules, in order to perform an action.
Explanation:
They're many different types of energy, a few of them are...
. Thermal energy
. Solar energy
. Chemical energy
. Kinetic energy
. Potential energy
. Mechanical energy to name a few...
All of these specific energies involve the interaction of molecules which are used for different things and can be converted from one type of energy to another.
Hope this helps.
Answer:
130m/s^2 and 1.22s
Explanation:
From V = u+at
Where V, u, a, and t are the final velocity, initial velocity, acceleration and time respectively.
v = 6.75m/s
u = 3.5m/s
t = 0.250secs
a = ?
V = u+at
6.75= 3.5+a(0.250)
6.75-3.5 = 0.250a
3.25=0.250a
Divide both sides by 0.250
3.25/0.250= 0.250a/0.250
a = 130m/s^2
The acceleration of the will be 130 meter per second
Question 2
Speed = distance/time
Given that speed= 4.25m/s
Distance = 5.2m and time = ?
4.25m/s = 5.2m/t
Cross multiply
4.25×t = 5.2
Make t the subject by dividing both sides by 4.25
4.25t/4.25 = 5.2/4.25
t = 1.22s
Hence the time taken will be 1.22 seconds
Blue would bend the most, since it has a greater refractive index. It has more energy and a shorter wavelength, so it slows.
Answer: c
Explanation:
Sound waves cannot travel through a medium