Physics problems needed please..needs all work to be shown also...thank u?

Question

3) A golf Ball is hit at an angle of 25˚ with an initial velocity of 60m/s.
A) What is the vertical component of the initial velocity?
B) What is the horizontal component of the initial velocity?
C) How long is the ball in the air?
D) How far does the ball travel horizontally?

4) A 40 kg object is traveling in a circular (r=15m) path at a speed of 20m/s.
A) what is the centripetal acceleration of the object?
B) what is the centripetal force on the object?

Answer 1

I think that your teacher wants to see YOUR work, not ours. Better luck next time.

Answer 2

3)a)Vy=sin(25)(60m/s)=25.36m/s
b) Vx=cos(25)(60m/s)=54.39m/s
c) V=at+Vi
-25.36m/s=(-9.8m/s^2)t+25.36m/s
-50.72m/s=(-9.8m/s^)t
t=5.17s
d)x=vt
x=(54.39m/s)(5.17s)
x=281.2m

4)a) a=V^2/r
a=(20m/s)^2/15m
a=26.67m/s^2

b)Fc=v^2m / r
Fc= (20m/s)^2(40kg) / 15m
Fc=1066.67N