The motion of an object thrown or projected into the air, subject to only the acceleration of gravity is called?

It states that the net momentum of an isolated system cannot be changed.

It is an encounter between two objects resulting in exchange of impulse and momentum.

The total kinetic energy of the system does not change and colliding objects bounce off after collision is called? 

Objects that stick together after collision is said to be perfectly?

Projectiles always maintain a constant horizontal velocity.

 Kinetic energy may be lost during collisions when it is spent in producing deformation or damage, such as when two cars collide.

The horizontal and vertical motions are completely dependent of each other.

A projectile launched horizontally has  initial vertical velocity.

Kinetic energy may be lost during collisions when it is converted to heat or other forms like binding energy, sound, light (if there is spark),

The total momentum before collision is equals to the total momentum after collision.

The total momentum of the system is conserved and must remain in?

It is an object upon which the only force is gravity.

A football is kicked with an initial velocity of 30 m/s at an angle of 45degrees with the horizontal. Determine the time of flight.

A football is kicked with an initial velocity of 30 m/s at an angle of45-degrees with the horizontal. Determine  the horizontal distance.

A football is kicked with an initial velocity of 30 m/s at an angle of45-degrees with the horizontal. Determine the peak height of the football.

A marble is thrown horizontally from a table top with a velocity of 1.45 m/s. The marble falls 0.50 m away from the table’s edge. How high is the lab table?

A marble is thrown horizontally from a table top with a velocity of 1.45m/s. The marble falls 0.50 m away from the table’s edge.  What is the marble’s velocity just before it hits the floor?

A 100 kg cart moves on an air track at 1.8 m/s. It collides with and sticks to another cart of mass 250 kg, which was stationary before collision. What is the velocity of the combined cart after collision?

Two ice skaters stand together. They “push off” and travel directly away from each other, the boy with a speed of 0.40 m/s and the girl with a speed of0.60 m/s. If the mass of the boy is 40 kg, what is the girl’s mass? (Consider the ice to be frictionless.)