Homework Statement
Some enterprising physics students working
on a catapult decide to have a water balloon
ﬁght in the school hallway. The ceiling is of
height 3.3 m, and the balloons are launched
at a velocity of 9.7 m/s. The acceleration of gravity is 9.8 m/s2 .At what angle must they...
Homework Statement
A subway train starting from rest leaves a station with a constant acceleration. At the
end of 7.8 s, it is moving at 11.778 m/s. What is the train’s displacement in the ﬁrst 5.6394 s of motion? Answer in units of m
Homework Equations
a= velocity final - velocity...
Homework Statement
A Ball is thrown upwards. What is its initial vertical speed? The acceleration of gravity is 9.8 m/s2 and maximum height is 7.2 m ,. Neglect air resistance.
Homework Equations
Vfinal squared = velocity initial squared + 2g times change in y
The Attempt at a...