Newtons 1st Law
whats newtons first law
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon
whats newtons second law
net force in any direction causes it to accelerate
what is newtons thrid law
two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction.
if a 1kg object is moving 2m/s^2 whats the net force of the object
2N
whats the equation to calculate mass when a a force and acceleration is known
F/a=m
What is friction
how do you find net force or F
F=ma
give an example of newtons third law
depends
if a person is hanging from one arm and weights 150kg, what is the tension force of the arm holding the man
1500N
100N
if someone is sky diving, ignoring air resistance, what forces are acting on the person
Gravity
if the force vectors are the same length going the opposite direction in a diagram what is the object doing
either at rest or at a constant speed
if sam is pushing a rock with 100N of force, if the rock is 300kg how much force is the rock pushing on samantha
100N
if you have a mass on earth of 200kg and the acceleration on jupiter is 100m/s^2, what is your mass on jupiter
200kg
whats the normal force of a box that is 12.7kg and is at an angle of 27 degrees
113N
if a car is slowing down to a stop, what forces are acting on the car?
Friction, Gravity, normal force
what is terminal velocity
when the force of air resistance is equal to gravity
if a car hits a bug in the air according to newtons third law they both hit each other with the same amount of force. Then why doesnt the car crash?
The acceleration and masses are different
what is the formula for angular tension force
whats the calculation for Mu?
force needed to make the object move/normal force
if a long board has a friction force of 12 east and applied force of 27 west applied at the same time, what is the force of the longboard.
15N west
if the force of an object is 1200N and has a 2m/s^2 acceleration, what is its mass
600kg
if a bowling ball and a tennis ball are rolled at each other, when they hit which one is going to have a greater acceleration?
The tennis ball
750(sin30)= 375N
if block A sits on a horizontal, friction free table. it is attached by a string to block B, which drags block A horizontally across the table. Block A has a mass of 5kg and block B has a mass of 1kg, what is they acceleration of the system
10/6N or 1.667