Work is calculated as the product of Force, Distance, and
angular motion. In this case, the work done by gravity is perpendicular to the motion
of the cart, so θ = 90°
and W=Fdcosθ
W=35.0 N x 20.0 m x cos90
W=0 J
This means that work done perpendicular to the direction of
the motion is always zero.
Answer:
m = 327.07 kg
Explanation:
Given that,
Kinetic energy of a motorcycle, E = 57800 J
Velocity of the motorcycle, v = 18.8 m/s
We need to find the mass of the motorcycle. The kinetic energy of an object is given by :
m is mass
So, the mass of the motorcycle is 327.07 kg.
By Newton's second law, we have
So, in order to give a 0.15kg body an acceleration of 40m/s^2, you need a force of
The answer would be B the method of rock formation
Answer: magnet, motor
Explanation :
Hans Christian Orsted was the scientist who gives the relation between electricity and magnetism. He found that the magnetic needle gets deflected on the application of electric current to the circuit.
He observed that the current carrying wire acted like a magnet.
In 1821 Michael Faraday understands Orsted's work and invented electric motor. An electric motor is a device which is used to convert electrical energy to mechanical energy.
