-An object in motion or at rest will stay at rest or in motion unless acted by anther force. - A seat belt keeps you from flying from your car when it is hit to help keep you still and in your seat along with an air bag.
-Force = Mass X Acceleration - Used to find how much force a human can take if the car is going at a certain speed to adjust the airbag to keep the person alive.
-For every action, there is an equal and opposite reaction - This is used to show that the car must be balanced and tested in many other ways. The car's tires and axle must be strong enough to hold the weight of the car which is right over it.
Answer:
The maximum speed of the jumper is 54.2m/s
The spring constant of the rope is
K=9.19KN/m
Explanation:
Step one
According to hook's law the applied force F is proportional to the extension e provided the elasticity is maintained
Step two
Given that
mass= 50kg
Height of bridge h=150m
Extention e=4m
Step three
To determine the maximum speed of the jumper
Since he is going with gravity we assume g=9.81m/s²
And we apply the equation of motion
V²=U²+2gh
where u= initial velocity of the jumper =0
h=height of bridge
Step four
Substituting we have
V²=0²+2*9.81*150
V²=2943
V=√2943
V=54.2m/s
Step five
To solve for the spring constant
We have to equate to potential energy of the jumper to the energy stored in the spring
Potential energy of the jumper =mgh
Energy stored in the spring =1/2ke²
Hence mgh=1/2ke²
Making k subject of formula we have
K=2mgh/e²
Substituting our data into the expression we have
K=2*50*9.81*150/4²
K=147150/16
K=9196.9N/m
K=9.19KN/m
Answer:2m
Explanation:
Wavelength=velocity/frequency
Wavelength=4/2=2m
A wavelength is the distance
between two identical peaks, troughs or crests in a wave. The unit of
wavelength can be meters, centimeters, millimeters, nanometers and so on.
NC means North Carolina.
Answer:
The temperatures will increase.
Explanation:
What will happen is that the temperature will increase. This is because, in wind direction and weather forecasting, a wind that shifts from the south means that warmer air/temperatures are approaching whereas a wind shift from the north implies that cooler air/temperatures are approaching.
