Mechanics

Question 1

What are projectiles?

Answer 1

Objects that are affected by gravity

Question 2

Equation to find time(without distance)

Answer 2

Vf = Vi + at

Question 3

Vertical and horizontal speed r…

Answer 3

Diff components

Question 4

Acceleration equals?

Answer 4

9.8

Question 5

Upwards acceleration is…

Answer 5

-9.8

Question 6

Centripetal force acts towards…

Answer 6

The centre of the circle

Question 7

Rider bikes across a very muddy track, what happens?

Answer 7

Move of at a tangent

Question 8

What is △P(=Ft)?

Answer 8

Impulse

Question 9

Why is vertical acceleration is always 9.8?

Answer 9

Assuming no external forces and is solely down to gravity

Question 10

Speed/time graph, distance is…

Answer 10

Area under graph

Question 10

Acceleration equation

Answer 10

a = v/t

Question 11

Highest point of negative parabola v=?

Answer 11

0

Question 12

Momentum equation

Answer 12

p = mv

Question 13

If left momentum is positive, right momentum is…

Answer 13

Negative

Question 14

Total before momentum equals…

Answer 14

Total after momentum

Question 15

Clockwise torque equals…

Answer 15

Ur mum!!(anticlockwise torque)

Question 16

Upwards force equals…

Answer 16

Downwards force

Question 17

Reference point can be…

Answer 17

Any pivot

Question 18

Parabola speed parted calculation??

Answer 18

Half half, split through y-axis

Question 19

Equilibrium means…

Answer 19

Equal and opposite forces

Question 20

Name the four forces(up down left right)

Answer 20

support, weight, friction, thrust

Question 21

F=kx, what is k?

Answer 21

Spring constant

Question 22

What is spring constant?

Answer 22

Force needed to change length of spring by 1m

Question 23

F=kx, what is x and its unit?

Answer 23

Extension of spring, metre

Question 24

Parellel springs’ spring constant?

Answer 24

x2

Question 25

Series springs’ spring constant?

Answer 25

1/2

Question 26

Newton’s FIRST law

Answer 26

External forces must have or won’t move/constant speed

Question 27

Newton’s SECOND law

Answer 27

F = ma, acceleration affected on force and mass

Question 28

Newton’s THIRD law

Answer 28

Equal opposite forces for every action

Question 29

“Give size and direction” direction being…

Answer 29

The angle

Question 30

Circular Motion — explain why an object is accelerating but also at constant motion

Answer 30

An object moving in circular motion would move at a constant speed, but as it’s direction is constantly changing it means that the object is always accelerating

Question 31

What is tension force?

Answer 31

Centripetal force

Question 32

What is range?

Answer 32

Horizontal distance

Question 33

(Momentum & Impulse) Size and direction meaning…

Answer 33

[force] away from the [moving object]

Question 34

F = kx in units?

Answer 34

N = Nm⁻¹ x m

Question 35

ITS NOT P(left) = P(right)

Answer 35

0 = P(left) + P(right)

Question 36

What are vectors?

Answer 36

velocity n force

Question 37

(Fc) Object sliding off is about(3 things)…

Answer 37

tangent, constant speed, straight line

Question 38

What supplies inwards Fc? And r there balanced forces?

Answer 38

friction, balanced forces

Question 39

Collision is part of what topic?

Answer 39

(momentum) impulse p=ft

Question 40

Change of momentum equation?

Answer 40

Pf - Pi