Use the formula for Kinetic Energy (KE), which is the energy due to the motion of an object.
KE = (1/2) * (mass) * (velocity)2
where KE is in joules, mass is in kg, and velocity (or speed) would be in meters/sec...Just substitute the appropriate numbers, rearrange and solve for velocity
momentum = mass x velocity => mass = momentum / velocity
You cannot. Force is mass times acceleration. You have neither.
You can't, because you don't have enough information. In order to find velocity, you need to be able to find the speed and the direction of motion. You have the speed, but you have no information that you can use to determine the direction in which the object is moving. Mass doesn't help.
First Find the Force Acting on Body take a = 9.8m/s F=ma Second Work Done = Force x Displacement Answer will be in Joules
Power is equal to Force times velocity; P=Fv. You are given the 'speed', which I assume to be velocity. You also have acceleration. In order to find F, you need first to find the mass, which you can calculate from the weight, Fg, by dividing by the acceleration due to gravity, 9.8. You then have the mass. From here, multiply mass times acceleration times the velocity.
Kilograms are mass units, Joules are energy units. You could use Einstein's energy-mass equivalence and multiply the mass (in kg) by the speed of light (in m/s) squared; that would give you the energy equivalent in Joules of a given mass.
Momentum = mass x speed so speed = momentum/mass or V=P/m
momentum = mass x velocity => mass = momentum / velocity
To calculate mass when given joules and velocity, you can use the formula for kinetic energy: KE = 0.5 * m * v^2, where KE is the energy in joules, m is the mass, and v is the velocity. Rearrange the formula to solve for mass: m = 2 * KE / v^2. Plug in the values for energy and velocity to find the mass.
Energy (in Joules) equals the mass (in Kgs) multiplied by the square of speed of light (in meters per second)
You can find the mass of a substance dissolved in a solution given temperature and joules using the relation q=mc(change in T). Where q is heat in joules, m is the mass, c is the specific heat capacity, and T is the temperature.
The kinetic energy of a moving object is given by the formula 1/2 * mass * speed^2. Plugging in the values for the mass (1 kg) and speed (20 m/s), the kinetic energy would be 200 J.
You cannot. Force is mass times acceleration. You have neither.
You can't, because you don't have enough information. In order to find velocity, you need to be able to find the speed and the direction of motion. You have the speed, but you have no information that you can use to determine the direction in which the object is moving. Mass doesn't help.
The kinetic energy of a molecule is given by the formula KE = 0.5 * m * v^2, where m is the mass of the molecule and v is its velocity. For an N2 molecule moving at a certain speed, you would need to know the speed and the mass of the molecule to calculate the kinetic energy in joules.
78.4 joules at 2.8m/s
First Find the Force Acting on Body take a = 9.8m/s F=ma Second Work Done = Force x Displacement Answer will be in Joules