Forces Y7+8.

Question 1

What is mass?

Answer 1

The amount of matter in an object

Question 2

What is the force of something measured in?

Answer 2

Newtons…N

Question 3

What do you do to find your weight on earth?

Answer 3

x10/9.8…e.g if you weigh 30 kg (mass), your weight is 30kg x 9.8 = 343N

Question 4

What is the formula to find the speed of something

Answer 4

Distance divided by time

Question 5

What are the six forces?

Answer 5

Gravity, weight, air resistance, upthrust, thrust and friction.

Question 6

Which planet has the strongest GFS?

Answer 6

Jupiter

Question 8

What do you use to find your mass?

Answer 8

A weighing scale

Question 9

In a Distance-Time graph, which goes on the y-axis?

Answer 9

Distance

Question 10

What does the strength of gravity depend on?

Answer 10

The distance between the two objects and size of the objects

Question 11

What is the name of the force that opposes every force against it?

Answer 11

Reaction force

Question 12

On a graph, how do you know if the vehicle is stationary?

Answer 12

There is a horizontal straight line

Question 13

On a graph, how do you know when a vehicle is faster than another?

Answer 13

It has a steeper gradient

Question 14

Which force keeps objects afloat?

Answer 14

Upthrust

Question 15

What is friction?

Answer 15

The contact between two touching objects

Question 16

What is the name of the force that you carry out on another object?

Answer 16

Applied force

Question 17

Acceleration

Answer 17

How quickly speed increases or decreases

Question 18

Air resistance

Answer 18

The force on an object moving through the air that causes it to slow down (also known as drag)

Question 19

Contact force

Answer 19

Force that acts by direct contact e.g friction

Question 20

Equilibrium

Answer 20

State of an object when all forces are balanced

Question 21

Gravitational Field

Answer 21

The region where other objects feel a gravitational force

Question 22

Driving force

Answer 22

A force that is pushing or pulling something

Question 23

Resistive force

Answer 23

Any force that acts to slow downs moving object

Question 24

Speed

Answer 24

How much distance is covered in a given time

Question 25

Distance time graph

Answer 25

A graph that shows how far an object moves each second

Question 26

Balanced (forces)

Answer 26

Forces acting on an object that are the same size but act in opposite directions

Question 27

Newtonmeter

Answer 27

A piece of equipment used to measure weight in Newtons

Question 28

What is the equation for stress?

Answer 28

force (N)
Stress= ————
area(m^2)