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Flashcards in Mechanics Deck (18)
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1
Q

Speed is measured in

A

Ms-1

2
Q

What is a force and what is the unit for force

A

A push or a pull or a twist. Newtons

3
Q

What force is going up

A

Support is keeping it stable

4
Q

What force is going down

A

Gravity is pushing object down

5
Q

What force is going left

A

Friction is acting against the movement of object

6
Q

What force is going right

A

Thrust is acting behind object

7
Q

The formula for force

A

F= Ma

8
Q

Energy law

A

Energy cannot be created or destroyed, you can only change it from one form to another

9
Q

What is the equation for speed

A

S= d/t

10
Q

What is the formula for gravitational potential energy

A

GPE=m x g x h

Measured in joules

11
Q

What is the formula for kinetic energy

A

Ek = 1/2 mv2

Measured in joules

12
Q

What is gravitational energy

A

Energy found high up like on a mountain

13
Q

Kinetic energy

A

Movement

14
Q

Rearranged kinetic formula to make velocity the subject

A

V= square root 2Ek/ m

15
Q

Work formula

A

W= fd

16
Q

Work

A

Done when energy is changed from one kind to another. Work is measured in joules

17
Q

Pressure concept

A

The smaller the area the more force in one area so more pressure exerted. The larger the area the force is spread out so less pressure is exerted in one area

18
Q

Pressure is measured in

A

Nm-2