Forces and Motion 1
True or False: An unbalanced force doesn't affect motion.
false.
The heavier an object, the more __________ is required to stop it.
force
True or False: The story says that Newton came up with gravity after an orange fell on his head.
False, it was an apple
According to Newton,an object in motion will...
stay in motion
True or False: An unbalanced force doesn't affect motion.
False
Another name for Newton's 1st law.
law of inertia
This is how gravity is measured on an object.
weight
An object at rest will stay at rest unless something occurs.
the object is acted upon by an unbalanced force
A ball weighing 25kg is accelerated to 6m/s2. What is the force of the push?
F=150N
The tendency of matter to resist a change in it's state of motion.
Law of inertia.
The more mass an object has the more _________ it has.
inertia
A car and a large truck are rolling down a hill. This will take more force to stop it.
the truck.
This is a change in speed.
acceleration
A rocket taking off is an example of Newton's laws.
Newton's 3rd Law.
Tyson, who is wearing shoes, and Rob, who is barefoot, are playing tug-o-war. They each seem to be applying the same force but Tyson is winning. Why?
Tyson has better traction, or more friction.
When an object is not moving it is said to have these forces acting on it.
balanced force
Mr. Jones pushes his desk with a force of 268N. It accelerates to 4m/s2. What is the mass of Mr. Jones desk?
m=67kg
A golf ball rolls down a ramp at 5 meters per second. This is how far it will travel in 5 seconds if it maintains the same speed.
25m/s
According to Newton's 3rd Law, for every action there is this.
equal and opposite reaction
True or False.
Inertia is a force.
False
A car is moving at a constant rate of 17m/s. Is the car experiencing balanced or unbalanced forces?
Balanced forces
In a vacuum, a feather and a bowling ball are dropped from the same height at the same time. This describes the order of how the two objects will land.
they will land at the same time in a VACUUM.
they will land at the different time in a VACUUM.
they will land at the same time in a VACUUM.
True or False: Friction decreases speed.
True
Force = Mass x _______________.
acceleration
This is how you can tell an object is moving.
the object will not have a change in position
the object will have a change in position
The object will have a change in position