# physics

posted by .

A ball is thrown with an initial velocity of 20 meters per second at an angle of 60° with the horizontal ground surface. Find the following:
a. the horizontal velocity of the ball
b. the ball’s initial vertical velocity
c. the range of the ball
d. the maximum height of the ball

• physics -

Vo = 20 m/s @ 60 Deg.

a. Xo = 20*cos60 = 10 m/s.

b. Yo = 20*sin60 = 17.3 m/s.

c. Tr = (Vf - Vo) / g,
Tr = (0 - 17.3) / -9.8 = 1.77 s. = Rise
time.

Tf = Tr = 1.77 s.

Tr + Tf = Time in flight.

R = Xo * (Tr+Tf),
R = 10 m/s. * (1.77+1.77) s. = 35.4 m.
= Range.

d. h max = (Yf^2 - Yo^2) / 2g,
h max = (0 - (17.3)^2) / -19.6=15.31 m

## Similar Questions

1. ### Physics

A tennis player hits a ball at ground level, giving it an initial velocity of 24 m/s at 57 degrees above the horizontal. (a) what are the horizontal and verticla components of the ball;s initial velocity?
2. ### Physics

A tennis player hits a ball at ground level, giving it an initial velocity of 24 m/s at 57 degrees above the horizontal. (a) what are the horizontal and verticla components of the ball;s initial velocity?

A soccer player kicka a ball with an initial velocity of 10 meters per second at an angle of 30 degress above the horizontal. the magnitude of the horizontal component of the ball's initial velocity is
4. ### physics

A plane flying horizontally above Earth’s surface at 184 meters per second drops a crate. The crate strikes the ground 30.0 seconds later. What is the magnitude of the horizontal component of the crate’s velocity just before it …

A baseball is thrown at an angle of 40.0° above the horizontal. The horizontal component of the baseball’s initial velocity is 12.0 meters per second. What is the magnitude of the ball’s initial velocity?

A baseball is thrown at an angle of 40.0° above the horizontal. The horizontal component of the baseball’s initial velocity is 12.0 meters per second. What is the magnitude of the ball’s initial velocity?
7. ### Physical Science

Four balls are taken to the top of a building. Ball 1 is dropped (zero initial velocity). Ball 2 is thrown straight up with a velocity of 3 m/s. Ball 3 is thrown straight out with a horizontal velocity of 3 m/s. Ball 4 is thrown straight …
8. ### algebra

y=(v/u)x+(g)/(2(u^2))*x^2 where y is the object's vertical distance (in feet) above from where it was thrown x is the object's horizontal distance (in feet) away from where it was thrown and u is the objects' initial horizontal velocity …
9. ### Physics

A quarterback throws a pass at an angle of 40 degrees above the horizontal with an initial speed of 20 m/s. The ball is caught by the receiver 2.55 seconds later. Determine horizontal velocity, vertical initial velocity, the distance …
10. ### Physics

A quarterback throws a pass at an angle of 40 degrees above the horizontal with an initial speed of 20 m/s. The ball is caught by the receiver 2.55 seconds later. Determine horizontal velocity, vertical initial velocity, the distance …

More Similar Questions

Post a New Question