Force And Accelartion Flashcards Preview

GCSE Physics: Topic 10 > Force And Accelartion > Flashcards

Flashcards in Force And Accelartion Deck (14):
1

What happens if resultant force acts on an obect?

object will accelerate in direction of resultant force

2

What happens if object is not accelerating?

resultant force on object is zero

3

What is acceleration?

change in velocity

4

How can object change it's velocity?

changing it's direction - resultant force does this

even travelling at constant speed

5

How to calculate resultant force on an object?

F=ma

6

What is F?

resultant force in Newton , N

7

What is m?

mass of an object in kg

8

What is a?

acceleration of object in metres per second squared

9

When does Newton's second law say acceleration of object

is proportional to?

Resultant force

(applies when there is greater resultant force, object experiences greater acceleration)

10

When does Newton's second law say acceleration of object

is inversly proportional to?

Mass of object

(applies when given force, more massive object experiences less acceleration)

11

What is inertia of an object?

Its tendency to stay or rest in uniform motion

(moving at constant speed at a straight line)

12

How to investigate the accleration of trolly with constant mass by varying force applied to it?

First step

Use motion sensor and computer to record velocity of a trolley

as it accelerates

13

How to investigate the accleration of trolly with constant mass by varying force applied to it?

Second step

Use newton-meter to pull trolley to a known distance with constant force

repeat this ti apply different forces

14

How to investigate the acceleration of a trolly of varying mass whisly applying constant force

Keep the force the same and increases the mass of trolley

by standing small masses on it or stacking trollies on top of each other