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☆☆☆☆☆Cards in this guide (15)
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
What do all moving objects have
momentum
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 jogger runs at an average speed of 5 ms for 3 minutes then finishes with an average speed of 4 ms for 2 minutes What is his average speed in ms for the run
4.6ms
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
How far will a driver go by maintaining a constant speed of 70 miles per hour and driving for 6 hours
420 miles
Isaac Newton can be credited with all of these except
developed the theory of relativity
A plane traveling at 80 ms lands on a runway and comes to rest after 10 seconds What was the plane's deceleration
-80/10 = -8 m/s2
What does a force cause a mass to do
accelerate
What does the amount of force times the time applied equal
impulse
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 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.
A player kicks a soccer ball from ground level and sends it flying at an angle of 30 degrees at a speed of 26 ms
Yes your question is.......................
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