First, you must find the acceleration. You can do so using the following kinematics equation:
V=V0+at
(V is the final velocity, Vo is the initial velocity, a is acceleration and t is time.)
The object ends up stopping, so V = 0. V0 is given as 4 m/s and t is given as 10s. So:
0 = 4m/s + a(10s)
-4m/s = a(10s)
(-4m/s)/(10s) = a
-0.4m/s2 = a
Now you can use Newton's Second Law equation to find the force.
F=ma
(F is force, m is mass, and a is acceleration.)
Mass is given as 80kg, and the acceleration has been calculated to be -0.4m/s2.
F=(80kg)(-0.4m/s2)
F= -32 N
80 kg = 176.369 lb
Then you're on the heavy side, specially if you're female.
The answer is 176.370 lbs (approx.). Kilogram is the SI unit of mass and pound is an imperial unit of mass. To convert from kg to pound, multiply the kg unit by 2.20462.
It is 176.37 lbs (approx.). Kilogram is an SI unit of mass and pound is an imperial unit. To convert from kg to pound multiply kg unit by 2.20462.
Momentum is defined as mass * velocity, M=m*v. Momentum: 200kg*m/sec velocity: 2.5m/sec mass: (200kg*m/sec) / (2.5m/sec) = 80kg If remembering equations like these is difficult, then something useful for you would be to understand the concept of dimensional analysis. That is a fancy word for looking at the units of the given quantities. If you know that mass is kilograms, then you can figure out how to manipulate the units m/sec and kg*m/sec in order to come out with a final unit of kg. By dividing kg*m/sec with m/sec you end up getting (kg*m*sec) / (m*sec), leaving just kg left which is the unit you were looking for. Therefore you should divide 200 by 2.5 for a final answer of 80kg.
The acceleration of the human cannonball can be calculated using Newton's second law, which states that Force = mass * acceleration. In this case, the force is 2400N and the mass is 80kg, so the acceleration is 30 m/s^2.
What would weigh 80kg
The force exerted by the floor of the lift on the object will be the sum of the gravitational force acting downwards and the force necessary to accelerate the object downwards with the lift. The magnitude of the force will be the sum of the object's weight (mg) and the force due to acceleration (ma), which equals (20kg * 9.81 m/s^2) + (20kg * 4 m/s^2) = 196.2N + 80N = 276.2N.
15% of 80kg is 12kg.Just multiply 80 by 0.15 to get 12.
There are 1000000 milligrams in a kilogram. Therefore 80kg is 80,000,000 milligrams.
about 80kg
80kg
80,000.
To calculate weight of a known mass, the following formula is used:W = m⋅gThus, to calculate the weight of a 80kg person:W = (80kg)*(9.81 m/s^2)W = 784.8 kg⋅m⋅s^2 = 784.8N
we know that 1pound=2.2kg therefore, howmany pound=80kg Solution: 80kg/2.2kg=36.36 pound
80kg i think
4kg