How will you calculate the resultant force if the forces are acted on the same axis and the same direction?
Add the forces. Get the sum. Copy the direction.
Force A and B act on an object in opposite direction. A = 5N, East while B = 9N, West. How much is the net force (resultant force) acting on an object?
4 N, West
How will you calculate the resultant force if the forces are acting on the same line (axis) but in opposite direction?
Subtract lower value from higher value. Get the difference. Take the direction of the higher value.
A hammer hits a nail with a downward force of 50N.What is the size and direction of the force of the nail on the hammer?
50 N, upward
Describe the forces acting on the object when the resultant force on it is a non-zero number.
Unbalanced force
In Newton's law of interaction, where does the word EQUAL and OPPOSITE pertaining to?
EQUAL = amount of force, OPPOSITE = direction of forces
When a student is standing at rest on a bathroom scales, the scales read 500N. What is the size and direction of the force of the student on the scales?
500N downward
A weight of 2.0 Newton was hung at the end of a spring. The spring stretched from 120 mm to 152 mm. How much is its extension in meters?
0.032 meter
A light plastic bag and a heavy backpack are both placed on the seat of a moving car. When the car brakes, the plastic bag barely moves, but the heavy backpack slides strongly toward the front. Which has stronger intertia, why?
The heavy backpack shows stronger inertia because it has more mass. Objects with greater mass resist changes in their motion more, so when the car suddenly stop
It is the tendency of an object to remain at rest or in motion after acted upon by an unbalanced or external force.
Intertia
State Newton's third law of motion.
For every action there is an equal and opposite reaction.
It is the amount of gravitational force acting on the mass of an object.
Weight
Force divided by the extension of spring is equal to what quantity?
spring constant
When is an object considered elastic?
When it returns to its original shape when the forces deforming it are removed.
State Newton's second law of motion.
Acceleration is directly proportional to force but inversely proportional to the mass of an object.
How much is the resultant force if the object is moving at a constant speed in a similar direction?
Zero (0)
Two forces A and B acted on an object at different axis separated by 90degree angle. Force 1 = 27Newton, East while Force 2 = 22 Newton, North. How much is the resultant force?
approximately = 34.8 Newton, 40degree North of East
In an "Extension - Weight" graph (to be drawn on the board), What does the curve line at the end of a straight diagonal line tells you about the elasticity of an object?
The force applied to the object has exceeded the object's limit of proportionality.
Calculate the weight of a person on Moon whose mass is 50kg on Earth. Moon's gravitational field strength is 1.6 N/kg.
80kg
State Newton's first law of motion.
A body in motion will remain in motion, at constant speed and direction. A body at rest will remain at rest unless, acted upon by an unbalanced force.
State the Hooke's Law (Law of Elasticity)
The extension of a spring is directly proportional to the force applied, as long as its limit of proportionality is not exceeded.
What could be the reason why an elastic object reduced its elasticity?
The force applied has been exceeding the object's LIMIT OF PROPORTIONALITY.
It is the amount or quantity of matter in an object.
Mass
Describe the forces acting on an object is the object is stationary or moving at the same speed in a similar direction.
Balanced forces