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# Physics

Briana Kuhic

Lvl 10
2021-10-14 18:34:49
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Cards in this guide (26)
What is an isolated system

An isolated system is a collection of mass that does not interact with anything else in the universe.

If a bicycle has a mass of 10 kg and a velocity of 11 ms what is the magnitude of its momentum

Momentum = Mass x Velocity = 11 x 10 = 110 Ns (Newton seconds)

Momentum is a vector quantity

true

When you set something down on the ground what kind of work are your arms doing

Negative

apex;)

What does a simple pulley do

It redirects the force

Which of the following is equal to an impulse of 9 units

Apex:

Force = 2, time = 4.5.

The maximum displacement of a particle within a wave above or below its blank position is called amplitude

equilibrium

amplitude

It takes 300 N to move a box 10 meters in 10 seconds How much power is required

300 W

When a wave moves from a dense medium to a less dense medium most of the wave energy is

refracted

Work is the product of force and an objects what

Work is the product of a force, and the distance along which the force is applied.

Determine two ways power can be increased

One way to increase power is to work harder (generate more energy in same amount of time). Another way to increase power is to work faster (generate the same amount of energy in less time).

Inclined plane makes work easier by increasing the distance and decreasing the

force

Items involve a wedge

There are many items in everyday life that involve a wedge. A spatula for cooking is a wedge, a door stopper is a wedge used to stop the door, and a knife use to chop vegetables is a wedge.

Spaceship 1 and Spaceship 2 have equal masses of 300 kg Spaceship 1 has a speed of 0 ms and Spaceship 2 has a speed of 6 ms What is the magnitude of their combinied momentum

1,800 <3

Give two examples of class 2 levers

Wheel barrows and bottle openers are two examples of class 2 levers.

Spaceship 1 and Spaceship 2 have equal masses of 150 kg Spaceship 1 has an initial momentum magnitude of 900 kg-ms What is its initial speed

6m/s

Which requires more power-walking or running up the steps and why

Running up requires more power. The reason is that you spend the same energy in less time.

Running up requires more power. The reason is that you spend the same energy in less time.

Running up requires more power. The reason is that you spend the same energy in less time.

Running up requires more power. The reason is that you spend the same energy in less time.

What is an example of conditions not producing work

the momentum must be greater than the force . the force may be very large

According to the law of conservation of BLANK in an isolated system the initial total momentum before a collision equals the final total momentum.

Momentum apexxx

In a collision a vehicle that rebounds off the object it trikes experiences less force than if it crumples assuming the time is the same in both situations

false

Spaceship 1 and spaceship 2 have equal masses of 200 kg 1 has a speed of 0 ms and spaceship 2 has a speed of 10 ms what is the magnitude of their combined momentum

2000

What is a blank statement

A Blank piece of paper

What do we call a collection of matter that does not interact with anything else in the universe

An isolated system I think

Which of the following items does not use a wheel and axle (Apex)

a bicycle

Is this True or False that circular motion occurs on Earth

Circular motion does occur on earth.

Which of the following is considered to be a conservative force

Air resistance

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