Answer:
0.5 second
Explanation:
We are given that
Force, F=20 N
Mass, m=5 kg
Change in velocity,=2m/s
We have to find the time taken to change the velocity .
We know that
Force, F=ma
Where
Acceleration, a=Change in velocity/time
Substitute the values
Most of the mass is in the nucleus because the protons and neutrons are the heaviest particles, and electrons are nearly weightless.
Density = Mass / Volume
Mass = 0.69kg
Volume of cylinder (coin) = Area X Height
Area of coin = (3.14)(0.03)^2
Height = Thickness = 0.003m
Volume of coin = (0.0003) X (3.14)(0.03)^2
Density = (Mass of coin) / (Volume of coin)
Will increase strength: iron, nickel, steel
won't increase strength: wood, silver, glass
^thats on Plato
Examples of Newton's 2nd Law If you use the same force to push a truck and push a car, the car will have more acceleration than the truck, because the car has less mass. It is easier to push an empty shopping cart than a full one, because the full shopping cart has more mass than the empty one.
