Question

Assuming negligible air resistance, calculate the final speed of a rock thrown from a bridge 29m29m above water with an initial speed of 17.6m/s17.6m/s.

Answer #1

a stone is thrown horizontally with an initial speed of 30 m/s
from a bridge. fins the stone's total speed when it enters the
water 4 seconds later, assuming that air resistance is
negligible

A rock is thrown downward with a speed of 10.7 m/s from the top
of a cliff which height is 234 m. What was the time for the rock to
reach the bottom of the cliff? (g = 9.59 m/s2 and assume air
resistance is negligible)

A child throws a rock from ground level. Air resistance is
negligible. What is the maximum horizontal distance the rock could
travel, if the rock has a maximum initial velocity of 2.04 m/s?

You throw a small rock straight up from the edge of a highway
bridge that crosses a river. The rock passes you on its way down,
6.00 s after it was thrown. After the rock hits the surface of the
water it sinks into the water through a depth of 1.0 meter and
reached a speed of .5 m/s. What is the rate of slowing down for the
rock in the water during this 1 meter travel, assuming it slows...

You throw a small rock straight up from the edge of a highway
bridge that crosses a river. The rock passes you on its way down,
7.00 s s after it was thrown. What is the speed of the rock just
before it reaches the water 22.0 m m below the point where the rock
left your hand? Ignore air resistance.

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

1. A girl throws a rock horizontally, with a velocity of 13 m/s,
from a bridge. It falls 17 m to the water below. How far does the
rock travel horizontally before striking the water, assuming
negligible air resistance? Use g = 9.8 m/s2
2. Suppose one of Napoleon cannons has a muzzle speed
of 32m/s. It was aimed at 54 ◦ angle. What height can
the cannon ball reach? Use g = 9.8 m/s2
3.A car traveling 69 km/h...

A 0.26-kg rock is thrown vertically upward from the top of a
cliff that is 30 m high. When it hits the ground at the base of the
cliff, the rock has a speed of 31 m/s . You may want to review
(Pages 234 - 241) .A 0.26-kg rock is thrown vertically upward from
the top of a cliff that is 30 m high. When it hits the ground at
the base of the cliff, the rock has a...

A 0.40 kg rock is nudged off a bridge into a river below. If the
rock begins with zero velocity and has a speed of 20 m/s just
before it hits the water, how much kinetic energy did it have just
before it hit the water? Use the approximate value of g, 10 m/s/s.
Ignore air resistance.
A. How much potential energy did it have before the fall?
B. What is the height of the bridge.
C. Now suppose the...

a rock is thrown upward from a bridge into a river below. the
function f(t)=-16t2+32t+94 determines the height of the
rock above the surface of the water (in feet) in terms of the
number of seconds t since the rock was thrown.
(A) what is the bridges height above water?
(B) how many seconds after being thrown does the rock hit the
water?
(C) how many seconds after being thrown does the rock reach its
maximum height above the water?...

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