Question

Q1   
A canon (2010) has a maximum range 60 m. At what angle above the horizontal should the cannon be fired such that its range 50m
a. 45.3
b. 33.6
c. 28.2
d. 19.3
e. 60.2

Q2
A ball is shot straight up from the ground with an initial velocity 40m / s. How long will the ball be in the air? :
a. 40s
b. 8s
c. 80s
d. 165
e. 32s

Q3
A ball is shot straight up from the ground with an initial velocity 40m / s. How long will the ball be in the air?
a. 40s
b. 8s
c. 80s
d. 165
e. 32s

Answer 1