# Science-Motion Unit Flashcards

## Motion

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1
Q

True or False: Weight is a measure of how much gravity pulls on something.

A

True

2
Q

Math related

30 N of force acts on an object with 5 kg of mass. What is the acceleration?

f=ma

A

6m/s^2

3
Q

Math related

A 500 N force is applied to an object to generate an acceleration of 4 m/s/s. What is the mass of the object?

f=ma

A

125 kg

4
Q

Math related

A 8 kg block is pulled across a table by a horizontal force of 40 N with a frictional force of 8 N. What is the acceleration?

f=ma

A

4m/s^2

5
Q

How much net force acts on a bicycle that is moving at a constant speed?

A

Zero

6
Q

What is the force that pushes your car forward when you hit the gas pedal?

A

A force of friction between the tires and the road

7
Q

Math related

An object with a mass of 10 kg is falling through the air and experiences air resistance of 50 N. Calculate the net force acting on the object.

A

48 N

I multiplied 10 and 9.8/gravity then subtraced 98 and 50

8
Q

Calculate the Weight of an object with a mass of 100 kg.

A

980 N

Multiply 9.8 and 100

9
Q

Which accelerates the most:
A. Speeds up most shortly
B. Slows down longer

A

A. Speeds up shortly

An object that speeds up the most over a shorter amount of time

10
Q

Which object accelerates the most:
A. Large mass pushed with large force
B. Small mass pushed with large force

A

B. Small mass pushed with large force

11
Q

Does a bigger object or a smaller object have more inertia?

A

The bigger object

12
Q

Math related

How much force is needed to make a 500 N car accelerate at 4 m/s^2?

A

2000 N

I multiplied 500 and 4

13
Q

Position over time graph: Zone two going from origin straight out, what is the object doing

A

Moving backwards and a constant speed

14
Q

Position over time graph: Zone 1 line is curving up and fowards then sort of becoming straight, what is the object doing

A

Moving foward and slowing down

15
Q

Velocity over time graph: Zone 1 line starts at origin and goes straight out, what is the object doing

A

Moving foward and speeding up

16
Q

Velocity over time graph: Zone 2 line is above zero and is a straight horizontal line, what is object doing

A

Moving backwards at a constant speed

17
Q

Position over time graph: Zone 1 straight horizontal line above zero, what is object doing

A

Object is stationary

18
Q

Position over time graph: Zone 1 line starts in front of zero and goes diagonally down past x-axis and down in zone 2, what is object doing

A

Moving backwards at a constant speed

19
Q

Position over time graph: Zone 1 line is lifting off x-axis and going higher up making a curve, what is object doing

A

Moving foward and speeding up

20
Q

Position over time graph: Zone 2 starts at origin and curves deeper into the zone, almost becoming straight, what is the object doing

A

Moving backwards and slowing down

21
Q

Position over time graph:
Zone 1 line starts in front of zero starts almost straight and curves down, what is the object doing

A

Moving backwards and speeding up

22
Q

Velocity over time graph: Zone 1 line starts at origin and goes straight out diagonally, what is abject doing

A

Moving foward and speeding up

23
Q

Velocity over time graph: Zone 1 line starts in front of zero and goes down diagonally, what is object doing

A

Moving foward and slowing down

24
Q

Velocity over time graph: Zone 2 line starts at origin and goes straight out diagonally, what is object doing

A

Moving backwards and speeding up

25
Q

Velocity over time graph: Zone 2 line starts in front of origin and moves towards x-axis in a straight diagonal line, what is object doing

A

Moving backwards and slowing down

26
Q

Velocity over time graph: Zone 1 line starts in fron of zero and is straight horizontal, what is object doing

A

Moving foward at a constant speed

27
Q

Velocity over time graph: Zone 2 line is in front of zero and is straight and horizontal, what is object doing

A

Moving backwards at a constant speed

28
Q

Velocity over time graph: No zone line is straight and on the x-axis, what is object doing

A

Object is stationary