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Physics

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Emilia Bartell

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Cards in this guide (18)
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 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

A man and a woman exert a total of 900 N by pushing a car 20 meters across the street The man exerts twice as much force as the woman How much work does the man do

The man exerts a force of 600 N and the woman exerts a force of 300 N. Work done by the man = Force x displacement = 600 x 20 = 12,000 J Hence, the man performs 12,000 joules of work.

Which term is synonymous with organic shapes

Free-form shapes

The tangent of an angle equals the ratio of the

Sine of the angle to its cosine.

How much work is done when a 6.0 n weight is raised 2.0 meters off the ground

12j

If I have a right triangle The side opposite angle A is 6 meters and the side adjacent angle A is 8 meters How long is the hypotenuse

The hypotenuse is: 10

When a golf club strikes a golf ball the force exerted by the ball on the club depends on

the mass of the ball and club and the velocity of the club

Isaac Newton can be credited with all of these except

developed the theory of relativity

Which of these descriptions applies to matte surfaces

reflect a soft, dull light

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.

You drive a car 2 hours at 40 miles per hour 2 hours at 60 miles per hour how many miles will you travel

If you drive a car at 40 miles per hour for two hours,then the distance covered will be 80 miles.If you drive the car for another 2 hours at 60 miles per hour ,then you will cover another 120 miles.The total distance you will cover is thus 80 miles + 120 miles = 200 miles.

Which of these statements is true about the middle coloines

They had a large variety of farm products

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