Whenever a vehicle is in motion, it has got kinetic energy. Kinetic energy has a direct relationship with the stopping distance. Kinetic energy is dependent on the mass of the vehicle and also the velocity at which it is traveling. In case of a small vehicle, the mass of the vehicle will be small and so the stopping distance will also be less compared to a large vehicle. In the case of the large vehicle traveling at the same velocity as the small vehicle, the stopping distance will be greater because the large vehicle has a larger mass. So in case of a small vehicle the kinetic energy will be less and so the distance for stopping will be less than that of the large vehicle.
Without friction, Newton's second law, in the form F=ma would apply.100=50a. So the acceleration should be 2m/s^2100-friction = 50x1.5100-friction = 75100-75=friction25N = friction
Answer:
m = 20,000 kg
Explanation:
Force, ![F=2.5\times 10^4\ N](https://tex.z-dn.net/?f=F%3D2.5%5Ctimes%2010%5E4%5C%20N)
Acceleration of the shark, ![a=1.25\ m/s^2](https://tex.z-dn.net/?f=a%3D1.25%5C%20m%2Fs%5E2)
It is required to find the mass of the shark. Let m is the mass. Using second law of motion to find it as follows :
F = ma
Putting the value of F and a to find m
![m=\dfrac{F}{a}\\\\m=\dfrac{2.5\times 10^4}{1.25}\\\\m=20,000\ kg](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7BF%7D%7Ba%7D%5C%5C%5C%5Cm%3D%5Cdfrac%7B2.5%5Ctimes%2010%5E4%7D%7B1.25%7D%5C%5C%5C%5Cm%3D20%2C000%5C%20kg)
So, the shark's mass is 20,000 kg.
Because it can pollute the air and cause wild life to eat stuff that has been contimanted by the air
A mixture is a substance made by combining two or more different materials in such a way that no chemical reaction occurs. A mixture can usually be separated back into its original components. Some examples of mixtures are a tossed salad, salt water and a mixed bag of M&M's candy.