1st law
your sitting in a car,at rest,when another car rear ends your vehicle.Why do you and the passengers experience a whiplash, in terms of Newton's law in motion?
An object at rest tends to stay at rest.
suppose that a sled is accelerating at a rate of 2m/s2.If the net force is tripled and the mass is halved, then what is the new acceleration of the sled?
12 m/s2
A science book with a mass of 2.8 Kg is pushed along a table with a net force of 1N. what is the book's acceleration?
0.36 m/s2
what is first newton law
An object at rest stays at rest, an object in motion stays in motion
what is the formula for the 2nd law?
What do they stand for?
F=M x A
Force= Mass x Acceleration
for every action,there is an equal and opposite?
reaction
A box is sliding down a plane that has a inclination angle of 0=10. Calculate the coefficient of kinetic friction uk if the box is moving at a constant velocity V.
0.176
what factors determine the air resistance force on an object?
The air resistance force an object experiences depends on the object's speed and area.
F=MA
An object of mass 10 kg is accelerated upward at 2 m/s2. What force is required?
20N
what are 4 type of friction?
sliding
rolling
Air
water
what causes an object to accelerate?
unbalanced forces acting on an object cause the object to accelerate
who came up with the 3rd law of motion?
Isaac newton
A passenger in an elevator has a mass that exerts a force of 100N downwards.He experiences a normal force upward from the elevator's floor of 120N.what direction is he acclerating in, if at all and at what rate?
2 m/s^2 upwards
why do all freely falling objects fall with the same acceleration?
If a baseball and a cannonball are dropped from the same height at the same time in a vacuum, which ball will hit the ground first?
The balls land at the same time.