The force that pulls objects towards the center of the Earth at 9.8 m/s/s.
Gravity
List the four types of friction.
Fluid, rolling, static, and sliding.
An object that is in free fall reaches terminal velocity when __________________.
Gravity and air resistance equal each other.
An object will experience no motion when the net force calculated is _____________.
zero
Which of Newton's Laws are represented in the following: A cat pounces on a ball and is knocked backwards.
3rd Law
What force is applied to two people that each mass 150 kg a piece and are in free fall.
2,940 N
Why does a persons weight change when they visit the moon?
Because the gravitational field changes.
Calculate the time it takes for an apple to fall from a tree if the initial velocity is 45 m/s before it hits the ground.
4.59 or 4.6 sec
Anything thrown or shot through the air is considered a(n) ______________.
Projectile.
Another name for Newton's First Law is the Law of ________________.
Inertia.
Momentum is a characteristic that is dependent upon _______ and ___________.
Mass and velocity.
Which of Newton's Law states that the force applied to an object and the mass of the object determines the acceleration of the object?
2nd Law
What are some differences between a balanced and an unbalanced force?
A balanced produces no motion and the net force is zero. An unbalanced force produces motion and the net force is greater than zero.
Calculate the acceleration due to gravity on Pluto if a robot has a mass of 175kg and a weight of 950 N.
5.42 m/s/s
Which of Newton's three laws explains why a gun recoils?
3rd
