W = mg, where W is weight, m is mass, and gis 9.8 m/s2
9.8N = 9.8kg•m/s2
m = W/g = 9.8kg m/s2 / -9.8m/s2 = -1.0 kg
Negative mass is an absurdity, indicating that negative weight is an absurdity. Probably whomever set the question is considering weight as a vector under an "up is positive" convention. That is technically correct, but not conventional. Weight is usually discussed as positive, its downward direction being understood.
495 n
495 n
The weight of something is its mass (in Kg) times the gravity strength of the body the object is on (9.81 n/s^2 on earth). so a 12Kg object on earth would weigh: (12 Kg ) x ( 9.81 n/s^2 ) = 117.72 Newtons (n)
The Difference:Mass - is the amount of matter in an objectWeight - the magnitude of gravitational force acting on an objectHow they are measured:Mass - balanceWeight - scaleUnit of measurement:Mass - grams (g) and kilograms (kg)Weight - newtons (N)
6 newtons, so it keeps accelerating. As it does, the air resistance increases until it reaches 10 newtons so then the net force is zero and then the fall continues at constant speed (the terminal velocity).
On Earth, 20kg is 196 newtons or 44.1 lbs.
495 n
495 n
If your mass is 45.5 kilograms, then your weight on earth is about 445.9 newtons (rounded).On the moon or other planets, your mass is still 45.5 kilograms, but your weight is different,depending what body you're on.In space on the way there, your mass is still 45.5 kilograms, and your weight is zero.
When a body is moved from sea level to the top of a mountain what changes the body's mass it's weight or both explain?
Mass is measured in kilograms and force is measured in newtons. On Earth the force F = 1 newton has roughly the mass m = 0.102 kilograms. 20 newtons are 2.04 kilograms.
Yes, it does slightly.
If it is placed at a point where the force of gravity is such that it would accelerate the body at 1 ms-2.
The force that a human body can exert on a surfboard is its weight. Weight is the gravitational force acting on a body's mass, and is determined by multiplying the acceleration due to gravity (g), 9.81m/s2, times the person's mass in kilograms. The unit for weight is the Newton (N). For example, if a person has a mass of 75.5kg, his weight in Newtons will be 75.5kg x 9.81m/s2 = 741N.
+0.60
newton Technically speaking weight is measured in newtons, but newtons are used to measure force. Weight in the scientific sense is the force a body exerts due to the effect of gravity on it's mass. Gravity on earth has an accelerating effect of roughly ten metres per second per second. So weight is mass, in kilograms, multiplied by ten. Newtons are a derived unit made up of kilogram metres per second per second. In everyday use weight is taken as a synonym for mass; so recipes, people, buses, etc. are weighed in kilograms.
A body moving on a level surface will continue in the same direction at constant speed unless disturbed. it is just like newtons first law