Answer:
Kelly's weight would be 688.47 Newtons.
Explanation:
1 Kilogram would be 9.81 Newtons.
1. Jumping off a building
2. Hitting a tennis ball
3. Swinging a bucket of water in a circle
The correct choice is
D. electron
mass of proton is 1.67 x 10⁻²⁷ kg and has positive charge on it.
mass of neutron is slightly greater than the mass of proton. the mass of neutron is 1.675 x 10⁻²⁷ kg and has no charge on it.
mass of electron is 9.31 x 10⁻³¹ kg
comparing the masses of electron, proton, neutron and the nucleus, we see that the mass of electron is smallest.
Answer:
a. Fr^2 = 119.7^2 + 49.9^2 = 16,818.1
Fr = 129.7 N.
b. tanA = Y/X = 49.9/119.7 = 0.41688
A = 22.63o = Direction.
Explanation:
The normal force is perpendicular to the surface. Its intensity is equal to the force pressing the object against the surface, but it has opposite direction.
We need to calculate the force pushing the bag down in order to calculate normal force.
The force that pushes the bag down is equal to:

Where F is the force of a man dragging the bag and mg is gravity pulling the bag down.
The resulting force is:

Normal force has the same intensity but the opposite direction of this force.