1. A 20 kg tennis ball launcher shoots a 0.057 kg tennis ball across a frietionless court. If the tennis ball's velocity after it is launched is 36 m/s to the north, what
is the velocity of the tennis ball launcher?
2 A 0.008 kg bullet going 400 m/s to the east hits a tìn can filled with sand (total
mass 5 kg) and gets stuck inside in an inelastic collision. Assuming there is no
friction, how fast is the can and the bullet) moving after the collision?
3. A 110 kg running back carries the ball south at 8 m/s. A 130 kg linebacker runs to
make the tackle going north at m/s. In their collision, the linebacker wraps his
arms around the runner and makes it an inelastie collision. How fast are they
moving right after the collision (before they fall to the ground)

the total distance traveled by the car is

30km + 49km = 79 km .

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day

-4 on

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation