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Term1/14
An arrow is shot straight up at an initial velocity of 200 meters per seconds. How long will it be before beginning to fall
Definition1/14

20.40

Term1/14
A rock is dropped from a cliff and hits the ground 6.0 seconds later How high is the cliff
Definition1/14

176.4 meters

Term1/14
A rock falls off a bridge and hits the water 8 seconds later How high is the bridge
Definition1/14

A+ the answer is 313.6

Term1/14
A hammer is dropped off a roof of an apartment building that is 80 meters high How long will it take to hit the ground
Definition1/14

The hammer will take square-root(2x80/9.8)= 4.04 seconds to hit the ground.

The distance is related to the time by s=v0t + 1/2 gt^2 where vo, the initial velocity is=0.

The answer is 4.04 or rounded is 4 seconds.

Term1/14
A baseball is hit straight up at an initial velocity of 150MS. what will be the baseballs speed when it hits the ground
Definition1/14

20.40

Term1/14
A ball is thrown horizontally at 20 ms from the top of a cliff 50 meters high How long does it take the ball to reach the ground
Definition1/14

Use the equation [ D = 1/2 g t2 ] .

D = the distance of free-fall = 50 m

g = acceleration of gravity = 9.8 m/sec2

t = time in free-fall

D = 1/2 g t2

2D / g = t2

t = sqrt( 2D / g ) = sqrt( 100 / 9.8 ) = 3.1944 seconds(rounded)

The horizontal velocity that the ball has when it's launched doesn't appear

in the calculation, because it makes absolutely no difference in the result.

Any effects of air resistance have been ignored in arriving at this solution.

Term1/14
A ball is thrown horizontally from a cliff at a speed of 15 ms and strikes the ground 45 meters from the base of the cliff How long was the ball in the air
Definition1/14

Answer: 3 seconds

Term1/14
A ball is thrown horizontally from a cliff at a speed of 15 ms and strikes the ground 45 meters from the base of the cliff How high was the cliff rounded to the nearest meter
Definition1/14

Answer: 44 meters

Term1/14
During a baseball game the batter hits a high pop up directly over home plate If the ball stays in the air six seconds how high did the ball go
Definition1/14

176.4 meters

Term1/14
In what type of orbits do planets move around the sun
Definition1/14

elliptical

Term1/14
A pulley system is used to lift a 2000 newton engine up a distance of 3 meters The operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor To lift the engine fi
Definition1/14

250 newtons

A+ Answers

Term1/14
A football is thrown horizontally off the top of an apartment house that is 78.4 meters high the ball is thrown at a speed of 15 ms how far will the ball travel before hitting the streets below
Definition1/14

"60" or "sixty"

Term1/14
A rifle is shot straight up and the bullet leaves the barrel at a speed of 245 m s How long will it take the bullet to hit the ground
Definition1/14

50 sec.

Term1/14
What term is given to the net figure that results from vector
Definition1/14

resultant

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Cards in this guide (14)
An arrow is shot straight up at an initial velocity of 200 meters per seconds. How long will it be before beginning to fall

20.40

A rock is dropped from a cliff and hits the ground 6.0 seconds later How high is the cliff

176.4 meters

A rock falls off a bridge and hits the water 8 seconds later How high is the bridge

A+ the answer is 313.6

A hammer is dropped off a roof of an apartment building that is 80 meters high How long will it take to hit the ground

The hammer will take square-root(2x80/9.8)= 4.04 seconds to hit the ground.

The distance is related to the time by s=v0t + 1/2 gt^2 where vo, the initial velocity is=0.

The answer is 4.04 or rounded is 4 seconds.

A baseball is hit straight up at an initial velocity of 150MS. what will be the baseballs speed when it hits the ground

20.40

A ball is thrown horizontally at 20 ms from the top of a cliff 50 meters high How long does it take the ball to reach the ground

Use the equation [ D = 1/2 g t2 ] .

D = the distance of free-fall = 50 m

g = acceleration of gravity = 9.8 m/sec2

t = time in free-fall

D = 1/2 g t2

2D / g = t2

t = sqrt( 2D / g ) = sqrt( 100 / 9.8 ) = 3.1944 seconds(rounded)

The horizontal velocity that the ball has when it's launched doesn't appear

in the calculation, because it makes absolutely no difference in the result.

Any effects of air resistance have been ignored in arriving at this solution.

A ball is thrown horizontally from a cliff at a speed of 15 ms and strikes the ground 45 meters from the base of the cliff How long was the ball in the air

Answer: 3 seconds

A ball is thrown horizontally from a cliff at a speed of 15 ms and strikes the ground 45 meters from the base of the cliff How high was the cliff rounded to the nearest meter

Answer: 44 meters

During a baseball game the batter hits a high pop up directly over home plate If the ball stays in the air six seconds how high did the ball go

176.4 meters

In what type of orbits do planets move around the sun

elliptical

A pulley system is used to lift a 2000 newton engine up a distance of 3 meters The operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor To lift the engine fi

250 newtons

A+ Answers

A football is thrown horizontally off the top of an apartment house that is 78.4 meters high the ball is thrown at a speed of 15 ms how far will the ball travel before hitting the streets below

"60" or "sixty"

A rifle is shot straight up and the bullet leaves the barrel at a speed of 245 m s How long will it take the bullet to hit the ground

50 sec.

What term is given to the net figure that results from vector

resultant

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