Question

5) A rock is thrown directly southeast (45 degrees to S and E), at an initial velocity of 10 m/s, with an angle of elevation of 60 degrees. If the wind is blowing at a constant 2 m/s to the west, where does the rock land?

Answer #1

Projectile Motion: A rock is thrown into the air with an initial
velocity of 40 m/s and 60 degrees above the horizontal. (a) What is
the time when the velocity makes 45 degrees above the horizontal?
(b) What is the time when the velocity makes 45 degrees below the
horizontal? (c) Does it exist when the velocity makes zero degrees
with the horizontal? If yes, when? (d) Does it exist when the
velocity makes 90 (or -90) degrees with the...

A ball is thrown with an initial speed of 30m/s at an angle of
45 degrees. Assume the ball is thrown from ground level and lands
on the ground.
a) find the time of flight in secs?
b) find the maxium height in meters?
c) find the distance from where the ball is thrown to where it
lands in meters?
d) find the speed at the impact in meters/sec?

Consider a rock that is thrown off a bridge of height 82 m at an
angle θ = 22° with respect to the horizontal as shown in
the figure below. If the initial speed the rock is thrown is 13
m/s, find the following quantities.
(a) The time it takes the rock to reach its maximum
height.
s
(b) The maximum height reached by the rock.
m
(c) The time at which the rock lands.
s
(d) The place where...

A rock is thrown straight upward from the top of a building with
an initial velocity of 15.0 m/s, at an initial height of 45.0 m
above the ground. The rock just misses the edge of the building’s
roof on its way down. The magnitude of the acceleration due to
gravity is 9.79 m/s2 (in Greeley).a. What is the time needed for
the rock to reach its maximum height?b. What is its maximum height
with respect to the ground?c. How...

A ball is thrown directly upward from the edge of a
rock and travels such that after t seconds its height in feet above
the ground is given by the equation s(t) =-2.5t^2+10t+2
1.Find the equation that represents the instant
velocity v(t) of the ball on t time.
2.When does the ball has zero velocity?
3. What is the maximum height that the ball
reaches?
4. When does the ball touches the surface of the
Earth?
5. build the graph...

A rock is thrown over level ground, with an initial speed of
30m/s, at an angle of 35degrees above the horizontal. If we ignore
air resistance, how long does it spend in the air?
A.
2.1s
B.
0.5s
C.
1.2s
D.
3.5s

rock thrown upward with an initial speed of 24.5 m/s
from the top of a 50m tower.
a. what's the rockets velocity the instant it hits the
ground?
b. how long is it in the air?
c. what's the max height above the building the ball
reaches?

A ball is thrown upward with an initial velocity of 16.0 m/s at
an angle of 50.0 degrees above the horizontal. Use energy
conservation to find the ball's greatest height above the
ground.

A ball is thrown directly downward with an initial speed of 7.75
m/s, from a height of 29.4 m. After what time interval does it
strike the ground?
______________ s

4. A ball is thrown at 20 m/s at an angle of 7 degrees above the
horizon.
a. How far does it reach if it is thrown from a height of 2
m?
b. What would the horizontal component of the velocity be as the
ball hits the ground?
c. What would the overall speed of the ball be as it hits the
ground?

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