# physics

One strategy in a snowball ﬁght is to throw
a snowball at a high angle over level ground.
While your opponent is watching this ﬁrst
snowball, you throw a second snowball at a
low angle and time it to arrive at the same
time as the ﬁrst.
Assume both snowballs are thrown with
the same initial speed 12.6 m/s. The ﬁrst
snowball is thrown at an angle of 60

above
the horizontal. At what angle should you
throw the second snowball to make it hit the
same point as the ﬁrst? The acceleration of
gravity is 9.8 m/s
2
.

1. 👍 0
2. 👎 0
3. 👁 652
1. You use this service a lot. How about showing your own work and/or thoughts for a change??

In this case, they are asking for wnat other angle will cause the snowball to reach the same spot, when thrown at the same velocity, Vo.

Learn (or derive) this formula:

Range = (Vo^2/g)*sin(2A)

Since the range is proportional to the sine of twice the launch angle A, the other angle is 30 degrees. The sines of 60 and 120 degrees are the same. The time of flight will be less when thrown at 30 degrees.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### math

A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.2 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 9 cm.

2. ### physics

One strategy in a snowball fight is to throw a snowball at a high angle over level ground. While your opponent is watching the first one, a second snowball is thrown at a low angle timed to arrive before or at the same time as the

3. ### science

a snowball rolls off the edge of a horizontal roof at a velocity of 7 m/s. what is the speed of the snowball 3 s later?

4. ### Physics

during a snowball fight two balls with masses of 0.28 and 0.75 kg, respectively , are thrown in such a manner that they meet head-on and combine to form a single mass. the magnitude of initial velocity for each is 15 m/s. what is

1. ### calculus

Melting Snowball: A spherical snowball melts at a rate proportional to its surface area. Show that the rate of change of the radius is constant. (Hint: Surface Area =4(pi)r^2)

2. ### calculus

A snowball is melting at the rate of 2 inches per hour. How fast is the surface area of the snowball changing at the instant the snowball has a radius of 3 inches i tried (d/dt) = 4pir^2 (dr/dt) its multiple choice and -72pi isnt

3. ### Physics

a 65-kg ice skater moving to the right with a velocity of 2.50m/s throws a .150kg snowball to the right with a velocity of 32.0m/s relative to the ground a) what is the velocity of the ice skater after throwing the snowball? b) a

4. ### Physics

A child throws a snowball at a tree and it sticks to the tree. Does this motion defy the Law of Conservation of Momentum? Explain. I'm thinking yes. Given that p(momentum)= mass x velocity, even though the tree is stationary, it

1. ### Calculus

A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.2 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 16 cm.

2. ### Physics

A 74.5 kg ice skater moving to the right with a velocity of 2.62 m/s throws a 0.21 kg snowball to the right with a velocity of 23.8 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the

3. ### Physics

A 1.50 kg snowball is fired from a cliff 13.0 m high with an initial velocity of 14.0 m/s, directed 41.0° above the horizontal. (a) Using energy techniques, rather than techniques of Chapter 4, find the speed of the snowball as

4. ### physics )':

A 66.5 kg ice skater moving to the right with a velocity of 2.80 m/s throws a 0.16 kg snowball to the right with a velocity of 20.4 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the