Please help me to answer the questions below.

1. A projectile is fired from ground level with an initial speed of 55.6 m/s at an angle of 41.2 degrees above the horizontal. (Express the answer with 3 significant figures)

a. roughly sketch the problem

b. determine the time necessary for the projectile to reach its maximum height

c. determine the maximum height reached by the projectile

d. determine the horizontal and vertical components of the velocity vector at the maximum height.

e. determine the horizontal and vertical components of the acceleration vector at the maximum height.

2. A boat is moving directly across a river that is 60 m wide. The river flows with a speed of 0.30 m/s. The boat travels at 0.50 m/s when in still waters. (express the answers with 2 significant figure)

a. Roughly draw or sketch the problem

b. At what angle relative to the straight-across direction must the boat be pointed?

c. what is the velocity of the boat as it moves directly across the river?

d. How long does it take the boat to cross the river?