P10 - forces and motion

Question 1

What is newtons 2nd law

Answer 1

Force = mass x acceleration

Question 2

Equation for force

Answer 2

F = ma
force = mass x acceleration

Question 3

What is inertia

Answer 3

How hard it is to change an object’s velocity

Question 4

Word equation for inertial mass

Answer 4

Inertial mass = force/acceleration

Question 5

What is terminal velocity

Answer 5

An objects maximum speed, when air resistance and weight are equal so it stops accelerating

Question 6

What is momentum

Answer 6

How hard it is to get an object to stop moving

Question 7

Word equation for momentum

Answer 7

Momentum = mass x velocity

Question 8

Symbol equation for momentum

Answer 8

P = mv

Question 9

What is the law of conservation of momentum

Answer 9

Momentum before = momentum after, momentum is always conserved

Question 10

Word equation for force in terms of momentum

Answer 10

Force = change in momentum / change in time

Question 11

Word equation for force in terms of momentum

Answer 11

F = triangle P/triangle t

Question 12

What are thinking distance and braking distance

Answer 12

Thinking distance - the drivers reaction time
Braking distance - distance traveled between hitting the brake and the car stopping

Question 13

What is hookes law

Answer 13

The extension of an object is directly proportional to the force applied until the limit of proportionality is exceeded