Forces And Energy

Question 1

What is a force?

Answer 1

Something that acts on an object that can change its shape, direction or speed

Question 2

What is force measured in?

Answer 2

Newtons

Question 3

Is force a scalar or a vector?

Answer 3

Vector

Question 4

What are the 6 types of force?

Answer 4

Air resistance
Friction
Thrust
Normal
Tension
Weight

Question 5

What is air resistance?

Answer 5

Air particles pushing against a solid

Question 6

What is friction?

Answer 6

Force between two solids

Question 7

What is thrust?

Answer 7

Pushing forwards force

Question 8

What is normal?

Answer 8

Force upwards from a surface

Question 9

What is tension?

Answer 9

Force from a hanging object

Question 10

What is weight?

Answer 10

What makes us fall down to earth

Question 11

What is the equation for weight?

Answer 11

Weight = mass x gravitational field strength

Question 12

What is the gravitational field strength on earth?

Answer 12

10m/s^2

Question 13

What is the force diagram called?

Answer 13

Free body diagram

Question 14

What is the inertial mass?

Answer 14

The force acting on the object divided by its acceleration

M=F/A

Question 15

What is the equation for force?

Answer 15

Force=change in momentum/time

Question 16

When are the 3 times energy is transferred?

Answer 16

Through work done by forces

In electrical equipment

In heating

Question 17

What is the equation for work done?

Answer 17

Force X distance moved in direction of force

E = FD

Question 18

What is power?

Answer 18

The rate of energy transfer

Question 19

What is the equation for power?

Answer 19

Power = work done/time taken

P=E/T

Question 20

What is equilibrium?

Answer 20

all the forces acting on an object combining to give 0