My bike

Question 1

Acceleration

Answer 1

change in velocity/time

Question 2

force

Answer 2

anything that causes a change

Question 3

energy

Answer 3

ability to do work

Question 4

attract

Answer 4

to pull (something) to or toward something else.

Question 5

magnetism

Answer 5

the property of attracting certain metals

Question 6

distance

Answer 6

the amount of space between places or something

Question 7

mass

Answer 7

a usually large amount of a substance that has no particular shape

Question 8

velocity

Answer 8

quickness of motion

Question 9

deceleration

Answer 9

to move slower

Question 10

force field

Answer 10

an area in which a particular force (such as magnetism) exists and can be felt — often used figuratively

Question 11

gravity

Answer 11

the natural force that tends to cause physical things to move towards each other : the force that causes things to fall towards the Earth

Question 12

lubricant

Answer 12

a substance (such as grease or oil) that causes something (such as a machine part) to be slippery and to move more smoothly

Question 13

friction force

Answer 13

is the force exerted on the surface by another when there is no motion between the two surfaces.

Question 14

North Pole

Answer 14

each of the two opposite points on the surface of a magnet at which magnetic forces are strongest.

Question 15

South Pole

Answer 15

each of the two opposite points on the surface of a magnet at which magnetic forces are strongest.

Question 16

electrostatic force

Answer 16

attraction or repulsion of particles or objects because of their electric charge.

Question 17

Force diagram

Answer 17

A force diagram is a picture of the object that you are studying and arrows pointing in the direction of the forces that effect your object, possibly with values in Newtons.

Question 18

Balanced forces

Answer 18

Balance forces are two forces acting in opposite directions on an object, and equal in size. Anytime there is a balanced force on an abject, the object stays still or continues moving continues to move at the same speed and in the same direction.

Question 19

Force Field

Answer 19

A force field is a map of the force felt over a particular area of space

Question 20

Gradient

Answer 20

an increase or decrease in the magnitude of a property (e.g. temperature, pressure, or concentration) observed in passing from one point or moment to another.

Question 21

Newton

Answer 21

the SI unit of force. It is equal to the force that would give a mass of one kilogram an acceleration of one metre per second per second, and is equivalent to 100,000 dynes.

Question 22

reaction time

Answer 22

The interval of time between application of a stimulus and detection of a response.

Question 23

repel

Answer 23

(of a magnetic pole or electric field) force (something similarly magnetized or charged) away from itself.

Question 24

s.i units

Answer 24

The seven SI base units and the interdependency of their definitions. Clockwise from top: kelvin (temperature), second (time), metre (length), kilogram (mass), candela (luminous intensity), mole (amount of substance) and ampere (electric current).

Question 25

Speed

Answer 25

the rate at which someone or something moves or operates or is able to move or operate.

Question 26

Ticker timer

Answer 26

The ticker timer makes dots on a paper tape every fiftieth of a second. So if a piece of tape is pulled through the timer for a second there will be 50 dots on it. Since the spaces between the dots take such a short time (1/50 s) the ticker timer is a very useful instrument for measuring short intervals of time.

Question 27

Time

Answer 27

a point of time as measured in hours and minutes past midnight or noon