Topic 1 - Forces

Question 1

T or F: A scalar value has a direction?

Answer 1

False

Question 2

What does a vector value need?

Answer 2

Magnitude and Direction

Question 3

How is delta represented?

Answer 3

With a triangle

Question 4

What does delta mean?

Answer 4

Change in ___

Question 5

What is the difference between distance and displacement?

Answer 5

Distance is total distance travelled, displacement is distance from start

Question 6

T or F: Displacement is a vector value?

Answer 6

True

Question 7

T or F: Speed uses displacement?

Answer 7

False

Question 8

What is the equation for Velocity?

Answer 8

V = s/t (velocity = displacement/time)

Question 9

What is acceleration?

Answer 9

Difference in velocity

Question 10

How do you calculate acceleration?

Answer 10

Final velocity - initial velocity

Question 11

How many SUVAT equations are there?

Answer 11

4

Question 12

T or F: V = U + AT is a SUVAT Equation?

Answer 12

True

Question 13

What does S stand for in the SUVAT equations?

Answer 13

Displacement

Question 14

What is the symbol for time in SUVAT?

Answer 14

T

Question 15

Manipulate this equation to equal A: V^2 = U^2 + 2AS

Answer 15

A = (V^2 - U^2) / 2S

Question 16

How do you find the velocity at a point for a non-uniform acceleration?

Answer 16

Tangent/differentiate

Question 17

For a Displacement x Time graph what does the gradient represent?

Answer 17

Velocity

Question 18

T or F: An acceleration x time graph is linear?

Answer 18

True

Question 19

How many of Newtons’ laws are there?

Answer 19

3

Question 20

What is the Newtons’ 2nd law?

Answer 20

Force = mass x acceleration

Question 21

T or F: Newton’s 3rd law is intertia

Answer 21

False

Question 22

What is Newton’s 1st law?

Answer 22

Inertia

Question 23

What is Newton’s 3rd law about?

Answer 23

Equal and Opposite actions.

Question 24

What is Power = too?

Answer 24

Mass x Velocity

Question 25

What symbol represents impulse?

Answer 25

I

Question 26

What is Impulse equal too?

Answer 26

Change in Power

Question 27

What is the expanded equation for Impulse?

Answer 27

M x V - M x U

Question 28

What is the rule about conservation of Power?

Answer 28

P(before) = P(after)

Question 29

What does work equal?

Answer 29

Change in energy

Question 30

What does work measure?

Answer 30

Amount of force over a distance

Question 31

What are the 2 equations for work?

Answer 31

Force x Displacement Force x Displacement x Cos()

Question 32

What does potential energy measure?

Answer 32

The energy of an object at a certain height

Question 33

What is the equation for Potential Energy?

Answer 33

PE = Mass x Gravity x Height

Question 34

T or F: Kinetic energy measures energy at a height?

Answer 34

False

Question 35

What does Kinetic Energy measure?

Answer 35

Active energy

Question 36

What is the Equation for Kinetic energy?

Answer 36

KE = 0.5 x Mass x Velocity^2

Question 37

What is Mechanical energy equal too?

Answer 37

KE + PE