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# Physics

Effie McLaughlin

Lvl 9
2021-11-02 18:33:55
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Cards in this guide (26)
Downward velocity is considered a negative. true or false

Downward velocity is considered a negative. This is a true statement.

What is the gravitational force between a mass of 20 kg and a mass of 100 kg that are 15 meters apart

5.9 x 10^-10 N

An isolated system is one which is not subject to any forces

external

Which of these components of projectile motion is not influenced by gravity

horizontal motion

The height of a projectile in motion is dependent on which of these

all of these

A bicycle is an example of what machine

A bicycle is an example of a complex machine, consisting of interacting simple machines.

Which of these components of projectile motion is influenced by gravity

vertical motion

The force of gravity on a projectile in motion is considered positive

false

Upward velocity is considered a negative

false

The value of the impulse equals the force x the

The value of the impulse equals the the force times the time.

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 What is the maximum height attained by the ball

10.7

V-cube 7 or megaminx

megaminx

A golfer tees off and hits a golf ball at a speed of 31 ms and at an angle of 35 degrees How long was the ball in the air

a

A golfer tees off and hits a golf ball at a speed of 31 ms and at an angle of 35 degrees What is the vertical velocity component of the ball

17.8 m/s

A golfer tees off and hits a golf ball at a speed of 31 ms and at an angle of 35 degrees what is the horizontal velocity component of the ball

25.4

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

What is force applied over a period of time called

impulse

What does the amount of force times the time applied equal

impulse

In what type of orbits do planets move around the sun

elliptical

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 What is the vertical velocity component of the ball to the nearest ms

13

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 golfer tees off and hits a golf ball at a speed of 31 ms and at an angle of 35 degrees How far did the ball travel before hitting the ground Round the answer to the nearest tenth of a meter

92 or 91.5 meters would be the maximum height.

A golfer tees off and hits a golf ball at a speed of 31 ms and at an angle of 35 degrees How long was the ball in the air Round the answer to the nearest tenth of a second

3.6

A golfer tees off and hits a golf ball at a speed of 31 ms and at an angle of 35 degrees What is the maximum height attained by the ball Round the answer to the nearest meter

16 or 16.1 meters is the maximum height.

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

A golfer tees off and hits a golf ball at a speed of 31 ms and at an angle of 35 degrees. What is the vertical velocity component of the ball Round the answer to the nearest tenth of a ms.

I don’t know but add my Instagram @0baby_dxnni0

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