PLS HELP 100 POINTS Question 1 (1 point)
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In which direction does an applied force move an object?

Question 1 options:

in the same direction as the force

independent of the force

in the opposite direction of the force

perpendicular to the force

Question 2 (1 point)
Which is not an example of work?

Question 2 options:

picking up a box off the floor

pushing a box across the floor

raising a barbell over your head

trying to push a rock that never moves

Question 3 (1 point)
A student pushes a 50-N box across the floor a distance of 15m. How much work was done to move the box?

Question 3 options:

750 J

75J

7500 J

no work was done

Question 4 (1 point)
If the simple machine reduces the amount of force, what must be increased? (Think of using an inclined plane)

Question 4 options:

the size of the simple machine

the distance over which the force is applied

the work the simple machine performs

the speed of the input force

Question 5 (1 point)
What is an input force?

Question 5 options:

the applied force on a system

the force a simple machine applies to an object

the force a person applies to a simple machine

the net force on a system

Question 6 (1 point)
A pair of scissors is which category of lever?

Question 6 options:

1st class

2nd class

3rd class

4th class

Question 7 (1 point)
A screw is an inclined plane wrapped around a flat, middle object.

Question 7 options:
True
False
Question 8 (1 point)
An example of a 3rd class lever is a

Question 8 options:

pair of scissors

pulley

pair of pliers

pair of tweezers

Question 9 (1 point)
Power is the rate at which work is done?

Question 9 options:
True
False
Question 10 (1 point)
The SI unit for power is

Question 10 options:

Newtons (N)

Celsius (C)

Watts (W)

Joules (J)

Question 11 (1 point)
A box resting on the top of a bookcase is an example of

Question 11 options:

work

nuclear energy

potential energy

kinetic energy

Question 12 (1 point)
The energy of position is kinetic energy.

Question 12 options:
True
False
Question 13 (1 point)
The energy of motion is kinetic energy.

Question 13 options:
True
False
Question 14 (1 point)
An object that is dropped has the most kinetic energy...

Question 14 options:

When it starts to fall

Just before it hits the ground

It does not have kinetic energy

Resting on the shelf

Question 15 (1 point)
An object resting on top of a building has the most potential energy...

Question 15 options:

Before it starts moving

When it stops moving

Just before it stops moving

Objects cannot have potential energy

Question 16 (6 points)
Match each word with its correct SI Unit or equation

Question 16 options:

Watts (W)

Newtons (N)

Displacement/Time

Celsius (C)

Distance/Time

Joules (J)

1.
Temperature

2.
Work

3.
Force

4.
Power

5.
Velocity

6.
Speed

Question 17 (1 point)
Atmosphere is the layer of gases that surround the Earth.

Question 17 options:
True
False
Question 18 (1 point)
The gas that makes up most of Earth's atmosphere is oxygen.

Question 18 options:
True
False
Question 19 (1 point)
High pressure brings clear, sunny skies, and calm weather. It is represented by H on the weather maps.

Question 19 options:
True
False
Question 20 (1 point)
Which clouds are fluffy, dense clouds composed of water droplets?

Question 20 options:

Stratus

Nimbus

Cirrus

Cumulus